{
  "timestamp": "2025-01-02T03:04:05.678Z",
  "type": "response_item",
  "payload": {
    "type": "message",
    "id": "legacy-message",
    "role": "assistant",
    "content": [
      {
        "type": "output_text",
        "text": "Hello from assistant"
      }
    ]
  }
}