{
    "user_id": "user123",
    "messages": [
      {
        "uuid": "550e8400-e29b-41d4-a716-446655440000",
        "timestamp": "2023-10-05T12:34:56.789123",
        "role": "user",
        "content": "Tell me a joke.",
        "intent_changed": true
      }
    ]
  }