{
  "manageEntity": {
    "action": "Save",
    "entityId": "792177",
    "entityType": "Track",
    "nonce": "0xb61178c9fd37e1862e8f75165911667a147e0a9019aaa065a3ea01cb53c83c0a",
    "signature": "0x03e7706a8413e0e94b7e974ab1dc6ac62c4d2a6224765ebfc182b2a2a97b7dfe427de6aecdcc7376cd014c1d5761fe8a5913ffd398072bd676bed2babdb45fa71b",
    "signer": "0x7b52e6AA15Db4Fc3A84AFF2b12e5B8B128eA8610",
    "userId": "808512351"
  }
}