{
  "manageEntity": {
    "action": "Save",
    "entityId": "1981233506",
    "entityType": "Track",
    "nonce": "0xd023bf843af04ed7c34ea5a80e60609aa5a2136254b281b93c0d1415044aa31a",
    "signature": "0x849e7cd00dd0e6e1637a989a9afc565e4c38f7836a029b9b492d0ae28c8da8c56c1641021f1947d5d9941d04340ebcdfa2debc0a2842bbeb13c044cda04fda461c",
    "signer": "0x96818aB6687d2E9bA070EB1d6843ef7BfEF5cDa4",
    "userId": "806873848"
  }
}