HeartbeatRequest

{
    "device_id": "MyDevice-A0CDCB",
    "firmware_version": "string",
    "timestamp": "2026-10-06T13:07:32Z",
    "time_trusted": true,
    "pending_events": 0,
    "wifi_rssi": -127,
    "sensor_ok": true,
    "sd_ok": true
}