{
  "acc_sample_count": 0,
  "accelerometer_file_size_bytes": 112,
  "app_version": "0.4",
  "build_number": "18",
  "device_model": "iPhone17,1",
  "disconnect_count": 0,
  "duration_seconds": 2.581567792,
  "events_file_size_bytes": 496,
  "free_storage_at_end_bytes": 34765936881,
  "free_storage_at_start_bytes": 34766125297,
  "gyro_sample_count": 0,
  "gyroscope_file_size_bytes": 133,
  "heart_rate_file_size_bytes": 90,
  "heart_rate_sample_count": 0,
  "integrity_status": "complete",
  "integrity_warnings": [],
  "ios_version": "26.6.1",
  "label_count": 0,
  "labels_file_size_bytes": 52,
  "polar_sdk_version": "8.1.0",
  "prediction_confidence_threshold": 0.7,
  "prediction_feature_schema_version": "motion-window-v2-batch-backfill",
  "prediction_model_id": "motionpulse-personal-seated-standing-logistic",
  "prediction_model_version": "phase2-logistic-v1-window-v2-prototype",
  "prediction_sample_count": 0,
  "predictions_file_size_bytes": 183,
  "reconnect_count": 0,
  "recording_status": "completed",
  "schema_version": 1,
  "session_ended_at": "2026-08-30T09:59:42Z",
  "session_file_size_bytes": 2356,
  "session_id": "a4795786-5da2-4ffe-b0dd-dc0c16bca4d0",
  "session_started_at": "2026-08-30T09:59:40Z",
  "upload_status": "uploaded",
  "workout_type": "TEST"
}