{
  "status": "success",
  "meta": {
    "version": "1.0.0",
    "description": "Mock payload for merge history testing",
    "served_at": ""
  },
  "identities": {
    "user_id": "nick_a",
    "device_id": "device_laptop_123",
    "linked_devices": [
      "device_laptop_123",
      "device_phone_987"
    ]
  },
  "conversations": [
    {
      "conversation_id": "conv_001",
      "owner_key": "nick_a",
      "source": "authenticated",
      "title": "User history before logout"
    },
    {
      "conversation_id": "conv_002",
      "owner_key": "device_laptop_123",
      "source": "guest",
      "title": "Guest history before login"
    }
  ],
  "messages": [
    {
      "turn_id": "m_001",
      "conversation_id": "conv_001",
      "owner_key": "nick_a",
      "role": "human",
      "content": "Ao khoac mau den size M con khong?",
      "ts": "2026-04-13T09:50:00Z"
    },
    {
      "turn_id": "m_002",
      "conversation_id": "conv_001",
      "owner_key": "nick_a",
      "role": "ai",
      "content": "Con hang size M, ban muon xem gia khuyen mai khong?",
      "ts": "2026-04-13T09:50:08Z"
    },
    {
      "turn_id": "m_003",
      "conversation_id": "conv_002",
      "owner_key": "device_laptop_123",
      "role": "human",
      "content": "Toi da logout roi, cho toi xem giay trang.",
      "ts": "2026-04-13T10:01:14Z"
    },
    {
      "turn_id": "m_004",
      "conversation_id": "conv_002",
      "owner_key": "device_laptop_123",
      "role": "ai",
      "content": "Day la goi y giay trang, ban muon loc theo gia nao?",
      "ts": "2026-04-13T10:01:22Z"
    }
  ]
}
