{
  "manageEntity": {
    "action": "Save",
    "entityId": "80292258",
    "entityType": "Track",
    "nonce": "0x39639aecb575235745760155ba354b29fe1fac479c9a384fe75d1860abfd860f",
    "signature": "0x4cb5627dd637c4314bccce4e51db92d28bb751758950863969552afad12f156f56aa18f6427022a3972d156b2d91f56adc57fa683e109c322089d9211d5f1a9f1c",
    "signer": "0xA27B00F57fC7B3E81c4d7C4919aCec97E1fCf667",
    "userId": "329513359"
  }
}