{
  "record_status": "synthetic_example",
  "payload_version": "gb-example-1.0",
  "message_id": "example-message-0001",
  "point_id": "GBX-PT-0001",
  "asset_id": "GBX-AS-0001",
  "observed_at": "2026-11-10T09:00:00Z",
  "received_at": "2026-11-10T09:00:02Z",
  "value": 18.7,
  "unit": "degC",
  "quality": "ok",
  "mapping_version": "example-map-1",
  "timestamp_basis": "gateway_acquisition"
}