{
  "manageEntity": {
    "action": "Save",
    "entityId": "1194380944",
    "entityType": "Track",
    "nonce": "0x1f0cdd2641c3bddd48d8a5bd20752dfe7881099f6bc65e886850e2b9ef509cea",
    "signature": "0x8a73f7b327e94a14f46e8f6d8f15a470fef2dfcc7a97a84356e81d47b16b1a9c4e17179b0dd49f3e95c45863d66caad4e17bc6276771734a6495e2131ccb76791c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}