{
  "message_id": "BUF-2026-03-24T124832Z-skyeye",
  "dev_id": "DEV-012",
  "source": "skyeye",
  "type": "checkin",
  "priority": "normal",
  "payload": {
    "persona": "知秋",
    "timestamp": "2026-03-24T12:48:25.209Z",
    "signature_hash": "47cc0e8932efdac8dfec90b9612dfec7e928ee3cdb75510a5e77a78f86bd0d51",
    "checks": null
  },
  "created_at": "2026-03-24T12:48:32Z",
  "status": "pending"
}