{
  "manageEntity": {
    "action": "Save",
    "entityId": "241026310",
    "entityType": "Track",
    "nonce": "0xd8698d4fb7f010a33f0fa3804be9f49b88bd70bf9c857128386638a8f5d75b46",
    "signature": "0x99b1e941835be369ba70c9171cb504ac8b4dbdab31bf968e00d1293eb4c9f6912d66c0918f13b5d973edaedc4b267d5c509eaed84bcea4447bdf44add443032b1b",
    "signer": "0x5fa60F185681545769de01098bB8F29cfbaE3cF0",
    "userId": "489026160"
  }
}