{
  "event_type": "feedback.received",
  "data": {
    "feedback_id": "feedback-demo-1",
    "feedback_type": 2,
    "feedback_content": "希望增加一步一步的说明",
    "inaccurate_reasons": [
      "not_helpful"
    ],
    "user_id": "demo-alice",
    "message_id": "message-01"
  }
}