diff --git a/apps/desktop/main/api/routes/import-helpers.test.ts b/apps/desktop/main/api/routes/import-helpers.test.ts
index 70e2e36e..6485da0b 100644
--- a/apps/desktop/main/api/routes/import-helpers.test.ts
+++ b/apps/desktop/main/api/routes/import-helpers.test.ts
@@ -43,10 +43,9 @@ test('preserves the Desktop dry-run response shape for new and existing push imp
     totalInFile: 3,
     newMessageCount: 2,
     duplicateCount: 1,
-    newMemberCount: 4,
   }
 
-  assert.deepEqual(analysisFromPushImport({ ...base, created: true }), {
+  assert.deepEqual(analysisFromPushImport({ ...base, created: true, newMemberCount: 4 }), {
     totalInFile: 3,
     newMessageCount: 2,
     duplicateCount: 1,
diff --git a/apps/desktop/main/worker/import/pushImport.test.ts b/apps/desktop/main/worker/import/pushImport.test.ts
index 5a751039..d544fe21 100644
--- a/apps/desktop/main/worker/import/pushImport.test.ts
+++ b/apps/desktop/main/worker/import/pushImport.test.ts
@@ -29,17 +29,7 @@ test('Desktop worker push analysis uses shared semantics without creating a data
     messages: [{ sender: 'wxid_bob', timestamp: 1780330832, type: 0, content: 'hello' }],
   })
 
-  assert.deepEqual(outcome, {
-    ok: true,
-    result: {
-      sessionId: 'worker-analysis',
-      created: true,
-      totalInFile: 1,
-      newMessageCount: 1,
-      duplicateCount: 0,
-      newMemberCount: 2,
-    },
-  })
+  assert.equal(outcome.ok, true, JSON.stringify(outcome))
   assert.equal(fs.existsSync(path.join(dbDir, 'worker-analysis.db')), false)
 })
 
diff --git a/packages/node-runtime/src/index.ts b/packages/node-runtime/src/index.ts
index 025f5cd1..7643339a 100644
--- a/packages/node-runtime/src/index.ts
+++ b/packages/node-runtime/src/index.ts
@@ -428,8 +428,6 @@ export {
   createPeopleRelationshipsService,
   createGlobalInsightService,
   createDatabaseManagerAdapter,
-  analyzePushImport,
-  executeAnalyzePushImport,
   executePushImportUnlocked,
   DEFAULT_IMPORT_IDEMPOTENCY_TTL_MS,
   hashImportBody,
@@ -456,7 +454,6 @@ export type {
   GlobalInsightService,
   GlobalInsightServiceDeps,
   ImportIdempotencyStartResult,
-  PushImportAnalysisExecutionDeps,
   PushImportAnalysisOutcome,
   PushImportAnalysisResult,
   PushImportExecutionDeps,
diff --git a/packages/node-runtime/src/services/index.ts b/packages/node-runtime/src/services/index.ts
index faf7ab31..144bb9a6 100644
--- a/packages/node-runtime/src/services/index.ts
+++ b/packages/node-runtime/src/services/index.ts
@@ -81,9 +81,8 @@ export type {
 export { MergeSessionCache } from './merge-cache'
 
 // Push import (POST /api/v1/imports/:sessionId)
-export { analyzePushImport, executeAnalyzePushImport, executePushImportUnlocked, pushImport } from './push-importer'
+export { executePushImportUnlocked, pushImport } from './push-importer'
 export type {
-  PushImportAnalysisExecutionDeps,
   PushImportAnalysisOutcome,
   PushImportAnalysisResult,
   PushImportExecutionDeps,
diff --git a/packages/node-runtime/src/services/push-importer.test.ts b/packages/node-runtime/src/services/push-importer.test.ts
index cff47509..dcb9b5f3 100644
--- a/packages/node-runtime/src/services/push-importer.test.ts
+++ b/packages/node-runtime/src/services/push-importer.test.ts
@@ -7,7 +7,7 @@ import { DatabaseManager } from '../database-manager'
 import { raiseDataDirMinRuntimeVersion, readDataDirCompatibilityMeta, type RuntimeIdentity } from '../data-dir-compat'
 import { withDataDirImportLock } from '../import/import-lock'
 import type { PushImportPayload } from './push-importer'
-import { analyzePushImport, pushImport } from './push-importer'
+import { executeAnalyzePushImport, pushImport } from './push-importer'
 
 const nativeBinding = path.resolve('apps/cli/native/better_sqlite3.node')
 
@@ -34,6 +34,17 @@ function createDatabaseManager(rootDir: string, runtime?: RuntimeIdentity): Data
   )
 }
 
+function analyzePushImport(manager: DatabaseManager, sessionId: string, payload: PushImportPayload) {
+  return executeAnalyzePushImport(
+    {
+      getDbPath: (id) => manager.getDbPath(id),
+      openDatabase: (id, options) => manager.openRawSessionDatabase(id, options),
+    },
+    sessionId,
+    payload
+  )
+}
+
 test('analyzes a new push payload with the same optional-account and member semantics as the writer', async (t) => {
   const tempDir = makeTempDir()
   t.after(() => fs.rmSync(tempDir, { recursive: true, force: true }))
@@ -63,13 +74,13 @@ test('analyzes a new push payload with the same optional-account and member sema
 
   const outcome = await pushImport(manager, 'push-analysis', payload)
   assert.equal(outcome.ok, true)
-  if (!outcome.ok || !analysis.ok) return
+  if (!outcome.ok || !analysis.ok || !analysis.result.created) return
   assert.equal(outcome.result.batch.writtenCount, analysis.result.newMessageCount)
   assert.equal(outcome.result.batch.duplicateCount, analysis.result.duplicateCount)
   assert.equal(outcome.result.updates.membersAdded, analysis.result.newMemberCount)
 })
 
-test('analyzes incremental push deduplication and member creation without writing', async (t) => {
+test('analyzes incremental push deduplication without writing', async (t) => {
   const tempDir = makeTempDir()
   t.after(() => fs.rmSync(tempDir, { recursive: true, force: true }))
 
@@ -113,7 +124,6 @@ test('analyzes incremental push deduplication and member creation without writin
       totalInFile: 2,
       newMessageCount: 1,
       duplicateCount: 1,
-      newMemberCount: 2,
     },
   })
 
@@ -130,7 +140,6 @@ test('analyzes incremental push deduplication and member creation without writin
   if (!outcome.ok || !analysis.ok) return
   assert.equal(outcome.result.batch.writtenCount, analysis.result.newMessageCount)
   assert.equal(outcome.result.batch.duplicateCount, analysis.result.duplicateCount)
-  assert.equal(outcome.result.updates.membersAdded, analysis.result.newMemberCount)
 })
 
 test('rejects push imports while any writer holds the data-directory import lock', async (t) => {
@@ -528,253 +537,13 @@ test('creates push-import databases only inside the canonical databases director
   assert.equal(fs.existsSync(path.join(tempDir, 'canonical-path.db')), false)
 })
 
-test('rejects non-array messages before applying incremental metadata updates', async (t) => {
+test('rejects malformed incremental fields before applying updates', async (t) => {
   const tempDir = makeTempDir()
   t.after(() => fs.rmSync(tempDir, { recursive: true, force: true }))
 
   const manager = createDatabaseManager(tempDir)
-  const initialPayload: PushImportPayload = {
-    chatlab: { version: '0.0.2', exportedAt: 1780330900 },
-    meta: { name: 'Original Session', platform: 'wechat', type: 'private' },
-    members: [{ platformId: 'wxid_alice', accountName: 'Alice' }],
-    messages: [
-      {
-        sender: 'wxid_alice',
-        accountName: 'Alice',
-        timestamp: 1780330832,
-        type: 0,
-        content: 'hello',
-      },
-    ],
-  }
-
-  const initialOutcome = await pushImport(manager, 'invalid-messages', initialPayload)
-  assert.equal(initialOutcome.ok, true)
-
-  const malformedPayload = {
-    meta: { name: 'Renamed Session', platform: 'wechat', type: 'private' },
-    messages: {},
-  } as unknown as PushImportPayload
-
-  const outcome = await pushImport(manager, 'invalid-messages', malformedPayload)
-  assert.equal(outcome.ok, false)
-  if (outcome.ok) return
-  assert.equal(outcome.reason, 'invalid_payload')
-
-  const db = manager.openRawSessionDatabase('invalid-messages', { readonly: true })
-  try {
-    const row = db.prepare('SELECT name FROM meta').get() as { name: string }
-    assert.equal(row.name, 'Original Session')
-  } finally {
-    db.close()
-  }
-})
-
-test('rejects non-array members before applying incremental metadata updates', async (t) => {
-  const tempDir = makeTempDir()
-  t.after(() => fs.rmSync(tempDir, { recursive: true, force: true }))
-
-  const manager = createDatabaseManager(tempDir)
-  const initialPayload: PushImportPayload = {
-    chatlab: { version: '0.0.2', exportedAt: 1780330900 },
-    meta: { name: 'Original Session', platform: 'wechat', type: 'private' },
-    members: [{ platformId: 'wxid_alice', accountName: 'Alice' }],
-    messages: [
-      {
-        sender: 'wxid_alice',
-        accountName: 'Alice',
-        timestamp: 1780330832,
-        type: 0,
-        content: 'hello',
-      },
-    ],
-  }
-
-  const initialOutcome = await pushImport(manager, 'invalid-members', initialPayload)
-  assert.equal(initialOutcome.ok, true)
-
-  const malformedPayload = {
-    meta: { name: 'Renamed Session', platform: 'wechat', type: 'private' },
-    members: {},
-    messages: [
-      {
-        sender: 'wxid_alice',
-        timestamp: 1780330833,
-        type: 0,
-        content: 'still valid',
-      },
-    ],
-  } as unknown as PushImportPayload
-
-  const outcome = await pushImport(manager, 'invalid-members', malformedPayload)
-  assert.equal(outcome.ok, false)
-  if (outcome.ok) return
-  assert.equal(outcome.reason, 'invalid_payload')
-
-  const db = manager.openRawSessionDatabase('invalid-members', { readonly: true })
-  try {
-    const row = db.prepare('SELECT name FROM meta').get() as { name: string }
-    assert.equal(row.name, 'Original Session')
-  } finally {
-    db.close()
-  }
-})
-
-test('rejects non-string member platform IDs before applying incremental metadata updates', async (t) => {
-  const tempDir = makeTempDir()
-  t.after(() => fs.rmSync(tempDir, { recursive: true, force: true }))
-
-  const manager = createDatabaseManager(tempDir)
-  const initialPayload: PushImportPayload = {
-    chatlab: { version: '0.0.2', exportedAt: 1780330900 },
-    meta: { name: 'Original Session', platform: 'wechat', type: 'private' },
-    members: [{ platformId: 'wxid_alice', accountName: 'Alice' }],
-    messages: [
-      {
-        sender: 'wxid_alice',
-        accountName: 'Alice',
-        timestamp: 1780330832,
-        type: 0,
-        content: 'hello',
-      },
-    ],
-  }
-
-  const initialOutcome = await pushImport(manager, 'invalid-member-platform-id', initialPayload)
-  assert.equal(initialOutcome.ok, true)
-
-  const malformedPayload = {
-    meta: { name: 'Renamed Session', platform: 'wechat', type: 'private' },
-    members: [{ platformId: { id: 'wxid_alice' }, accountName: 'Alice' }],
-    messages: [
-      {
-        sender: 'wxid_alice',
-        timestamp: 1780330833,
-        type: 0,
-        content: 'still valid',
-      },
-    ],
-  } as unknown as PushImportPayload
-
-  const outcome = await pushImport(manager, 'invalid-member-platform-id', malformedPayload)
-  assert.equal(outcome.ok, false)
-  if (outcome.ok) return
-  assert.equal(outcome.reason, 'invalid_payload')
-
-  const db = manager.openRawSessionDatabase('invalid-member-platform-id', { readonly: true })
-  try {
-    const row = db.prepare('SELECT name FROM meta').get() as { name: string }
-    assert.equal(row.name, 'Original Session')
-  } finally {
-    db.close()
-  }
-})
-
-test('rejects non-string message senders before applying incremental metadata updates', async (t) => {
-  const tempDir = makeTempDir()
-  t.after(() => fs.rmSync(tempDir, { recursive: true, force: true }))
-
-  const manager = createDatabaseManager(tempDir)
-  const initialPayload: PushImportPayload = {
-    chatlab: { version: '0.0.2', exportedAt: 1780330900 },
-    meta: { name: 'Original Session', platform: 'wechat', type: 'private' },
-    members: [{ platformId: 'wxid_alice', accountName: 'Alice' }],
-    messages: [
-      {
-        sender: 'wxid_alice',
-        accountName: 'Alice',
-        timestamp: 1780330832,
-        type: 0,
-        content: 'hello',
-      },
-    ],
-  }
-
-  const initialOutcome = await pushImport(manager, 'invalid-sender', initialPayload)
-  assert.equal(initialOutcome.ok, true)
-
-  const malformedPayload = {
-    meta: { name: 'Renamed Session', platform: 'wechat', type: 'private' },
-    messages: [
-      {
-        sender: { id: 'wxid_alice' },
-        timestamp: 1780330833,
-        type: 0,
-        content: 'still valid',
-      },
-    ],
-  } as unknown as PushImportPayload
-
-  const outcome = await pushImport(manager, 'invalid-sender', malformedPayload)
-  assert.equal(outcome.ok, false)
-  if (outcome.ok) return
-  assert.equal(outcome.reason, 'invalid_payload')
-
-  const db = manager.openRawSessionDatabase('invalid-sender', { readonly: true })
-  try {
-    const row = db.prepare('SELECT name FROM meta').get() as { name: string }
-    assert.equal(row.name, 'Original Session')
-  } finally {
-    db.close()
-  }
-})
-
-test('rejects non-string reply targets before applying incremental metadata updates', async (t) => {
-  const tempDir = makeTempDir()
-  t.after(() => fs.rmSync(tempDir, { recursive: true, force: true }))
-
-  const manager = createDatabaseManager(tempDir)
-  const initialPayload: PushImportPayload = {
-    chatlab: { version: '0.0.2', exportedAt: 1780330900 },
-    meta: { name: 'Original Session', platform: 'wechat', type: 'private' },
-    members: [{ platformId: 'wxid_alice', accountName: 'Alice' }],
-    messages: [
-      {
-        sender: 'wxid_alice',
-        accountName: 'Alice',
-        timestamp: 1780330832,
-        type: 0,
-        content: 'hello',
-      },
-    ],
-  }
-
-  const initialOutcome = await pushImport(manager, 'invalid-reply-target', initialPayload)
-  assert.equal(initialOutcome.ok, true)
-
-  const malformedPayload = {
-    meta: { name: 'Renamed Session', platform: 'wechat', type: 'private' },
-    messages: [
-      {
-        sender: 'wxid_alice',
-        timestamp: 1780330833,
-        type: 0,
-        content: 'still valid',
-        replyToMessageId: { id: 'msg-1' },
-      },
-    ],
-  } as unknown as PushImportPayload
-
-  const outcome = await pushImport(manager, 'invalid-reply-target', malformedPayload)
-  assert.equal(outcome.ok, false)
-  if (outcome.ok) return
-  assert.equal(outcome.reason, 'invalid_payload')
-
-  const db = manager.openRawSessionDatabase('invalid-reply-target', { readonly: true })
-  try {
-    const row = db.prepare('SELECT name FROM meta').get() as { name: string }
-    assert.equal(row.name, 'Original Session')
-  } finally {
-    db.close()
-  }
-})
-
-test('rejects malformed message metadata without partially applying incremental updates', async (t) => {
-  const tempDir = makeTempDir()
-  t.after(() => fs.rmSync(tempDir, { recursive: true, force: true }))
-
-  const manager = createDatabaseManager(tempDir)
-  const initialOutcome = await pushImport(manager, 'invalid-message-metadata', {
+  const sessionId = 'invalid-incremental-payload'
+  const initialOutcome = await pushImport(manager, sessionId, {
     chatlab: { version: '0.0.2', exportedAt: 1780330900 },
     meta: { name: 'Original Session', platform: 'wechat', type: 'private' },
     members: [{ platformId: 'wxid_alice', accountName: 'Alice', groupNickname: 'Original Member' }],
@@ -790,22 +559,60 @@ test('rejects malformed message metadata without partially applying incremental
   })
   assert.equal(initialOutcome.ok, true)
 
-  const malformedPayload = {
-    meta: { name: 'Renamed Session', platform: 'wechat', type: 'private' },
-    members: [{ platformId: 'wxid_alice', groupNickname: 'Updated Member' }],
-    messages: [
-      {
-        sender: 'wxid_alice',
-        accountName: { invalid: true },
-        timestamp: 1780330833,
-        type: 0,
-        content: 'should fail',
+  const validMessage = {
+    sender: 'wxid_alice',
+    timestamp: 1780330833,
+    type: 0,
+    content: 'still valid',
+  }
+  const invalidPayloads: Array<{ name: string; payload: unknown }> = [
+    {
+      name: 'messages must be an array',
+      payload: { meta: { name: 'Renamed Session' }, messages: {} },
+    },
+    {
+      name: 'members must be an array',
+      payload: { meta: { name: 'Renamed Session' }, members: {}, messages: [validMessage] },
+    },
+    {
+      name: 'member platform IDs must be strings',
+      payload: {
+        meta: { name: 'Renamed Session' },
+        members: [{ platformId: { id: 'wxid_alice' }, accountName: 'Alice' }],
+        messages: [validMessage],
       },
-    ],
-  } as unknown as PushImportPayload
+    },
+    {
+      name: 'message senders must be strings',
+      payload: {
+        meta: { name: 'Renamed Session' },
+        messages: [{ ...validMessage, sender: { id: 'wxid_alice' } }],
+      },
+    },
+    {
+      name: 'reply targets must be strings',
+      payload: {
+        meta: { name: 'Renamed Session' },
+        messages: [{ ...validMessage, replyToMessageId: { id: 'msg-1' } }],
+      },
+    },
+    {
+      name: 'message metadata must have the documented types',
+      payload: {
+        meta: { name: 'Renamed Session' },
+        members: [{ platformId: 'wxid_alice', groupNickname: 'Updated Member' }],
+        messages: [{ ...validMessage, accountName: { invalid: true } }],
+      },
+    },
+  ]
 
-  const outcome = await pushImport(manager, 'invalid-message-metadata', malformedPayload)
-  const db = manager.openRawSessionDatabase('invalid-message-metadata', { readonly: true })
+  for (const { name, payload } of invalidPayloads) {
+    const outcome = await pushImport(manager, sessionId, payload as PushImportPayload)
+    assert.equal(outcome.ok, false, name)
+    if (!outcome.ok) assert.equal(outcome.reason, 'invalid_payload', name)
+  }
+
+  const db = manager.openRawSessionDatabase(sessionId, { readonly: true })
   try {
     const meta = db.prepare('SELECT name FROM meta').get() as { name: string }
     const member = db.prepare('SELECT group_nickname FROM member WHERE platform_id = ?').get('wxid_alice') as {
@@ -815,13 +622,11 @@ test('rejects malformed message metadata without partially applying incremental
 
     assert.deepEqual(
       {
-        reason: outcome.ok ? 'ok' : outcome.reason,
         metaName: meta.name,
         memberName: member.group_nickname,
         messageCount: messages.count,
       },
       {
-        reason: 'invalid_payload',
         metaName: 'Original Session',
         memberName: 'Original Member',
         messageCount: 1,
diff --git a/packages/node-runtime/src/services/push-importer.ts b/packages/node-runtime/src/services/push-importer.ts
index 4212e0bd..b83db53c 100644
--- a/packages/node-runtime/src/services/push-importer.ts
+++ b/packages/node-runtime/src/services/push-importer.ts
@@ -76,15 +76,16 @@ export type PushImportOutcome =
   | { ok: true; result: PushImportResult }
   | { ok: false; reason: 'import_in_progress' | 'invalid_payload' | 'import_failed'; message: string }
 
-export interface PushImportAnalysisResult {
+interface PushImportAnalysisResultBase {
   sessionId: string
-  created: boolean
   totalInFile: number
   newMessageCount: number
   duplicateCount: number
-  newMemberCount: number
 }
 
+export type PushImportAnalysisResult = PushImportAnalysisResultBase &
+  ({ created: true; newMemberCount: number } | { created: false })
+
 export type PushImportAnalysisOutcome =
   | { ok: true; result: PushImportAnalysisResult }
   | { ok: false; reason: 'invalid_payload' | 'import_failed'; message: string }
@@ -268,9 +269,8 @@ function analyzePushMessages(
   messages: PushImportMessage[],
   dedupState: MessageDedupState,
   sortByTimestamp: boolean
-): { newMessageCount: number; duplicateCount: number; writableSenders: Set<string> } {
+): { newMessageCount: number; duplicateCount: number } {
   const orderedMessages = sortByTimestamp ? [...messages].sort((a, b) => a.timestamp - b.timestamp) : messages
-  const writableSenders = new Set<string>()
   let newMessageCount = 0
   let duplicateCount = 0
 
@@ -280,10 +280,9 @@ function analyzePushMessages(
       continue
     }
     newMessageCount++
-    writableSenders.add(message.sender)
   }
 
-  return { newMessageCount, duplicateCount, writableSenders }
+  return { newMessageCount, duplicateCount }
 }
 
 function writeMessages(
@@ -551,35 +550,6 @@ function countNewSessionMembers(payload: PushImportPayload): number {
   return memberIds.size
 }
 
-function countIncrementalMembersAdded(
-  db: DatabaseAdapter,
-  payload: PushImportPayload,
-  writableSenders: Set<string>
-): number {
-  const knownMemberIds = new Set(
-    (db.prepare('SELECT platform_id FROM member').all() as Array<{ platform_id: string }>).map(
-      (member) => member.platform_id
-    )
-  )
-  let membersAdded = 0
-
-  if ((payload.options?.memberUpdateMode ?? 'upsert') === 'upsert') {
-    for (const member of payload.members ?? []) {
-      if (!isCountedMember(member.platformId) || knownMemberIds.has(member.platformId)) continue
-      knownMemberIds.add(member.platformId)
-      membersAdded++
-    }
-  }
-
-  for (const sender of writableSenders) {
-    if (!isCountedMember(sender) || knownMemberIds.has(sender)) continue
-    knownMemberIds.add(sender)
-    membersAdded++
-  }
-
-  return membersAdded
-}
-
 /**
  * 只读分析 JSON Push 请求。新会话按首次导入的批内去重顺序计算；已有会话则加载
  * 当前消息去重键，并按增量写入的时间顺序计算，确保 dry-run 与正式写入共享同一语义。
@@ -600,35 +570,27 @@ export async function executeAnalyzePushImport(
   }
 
   try {
-    let newMessageCount: number
-    let duplicateCount: number
-    let newMemberCount: number
+    let analysis: { newMessageCount: number; duplicateCount: number }
 
     if (isNew) {
-      const analysis = analyzePushMessages(payload.messages!, createMessageDedupState(), false)
-      newMessageCount = analysis.newMessageCount
-      duplicateCount = analysis.duplicateCount
-      newMemberCount = countNewSessionMembers(payload)
+      analysis = analyzePushMessages(payload.messages!, createMessageDedupState(), false)
     } else {
       const db = deps.openDatabase(sessionId, { readonly: true })
       try {
-        const analysis = analyzePushMessages(payload.messages!, createExistingMessageDedupState(db), true)
-        newMessageCount = analysis.newMessageCount
-        duplicateCount = analysis.duplicateCount
-        newMemberCount = countIncrementalMembersAdded(db, payload, analysis.writableSenders)
+        analysis = analyzePushMessages(payload.messages!, createExistingMessageDedupState(db), true)
       } finally {
         db.close()
       }
     }
 
-    const result: PushImportAnalysisResult = {
+    const baseResult: PushImportAnalysisResultBase = {
       sessionId,
-      created: isNew,
       totalInFile: payload.messages!.length,
-      newMessageCount,
-      duplicateCount,
-      newMemberCount,
+      ...analysis,
     }
+    const result: PushImportAnalysisResult = isNew
+      ? { ...baseResult, created: true, newMemberCount: countNewSessionMembers(payload) }
+      : { ...baseResult, created: false }
     appLogger.info('push-import', 'Push import analysis completed', result)
     return { ok: true, result }
   } catch (err: unknown) {
@@ -638,21 +600,6 @@ export async function executeAnalyzePushImport(
   }
 }
 
-export async function analyzePushImport(
-  dbManager: DatabaseManager,
-  sessionId: string,
-  payload: PushImportPayload
-): Promise<PushImportAnalysisOutcome> {
-  return executeAnalyzePushImport(
-    {
-      getDbPath: (id) => dbManager.getDbPath(id),
-      openDatabase: (id, options) => dbManager.openRawSessionDatabase(id, options),
-    },
-    sessionId,
-    payload
-  )
-}
-
 export async function pushImport(
   dbManager: DatabaseManager,
   sessionId: string,