{
  "dev_id": "DEV-012",
  "status": "checkin-ok",
  "timestamp": "2026-03-24T12:48:25.209Z",
  "persona": "知秋",
  "signature_hash": "47cc0e8932efdac8dfec90b9612dfec7e928ee3cdb75510a5e77a78f86bd0d51"
}