{
  "manageEntity": {
    "action": "Save",
    "entityId": "101887065",
    "entityType": "Track",
    "nonce": "0xa0b9443782f97e50ff8420bb17738822960f492fce893047ded402e467a67fd0",
    "signature": "0x6efb794b91dbc31014765df9f01cf27572b5da0a6c301e80127d555c9760f5cb4ed06af5fb571d0273849d7d88ef7ae8991188f1016fa2fb449aebe2c739cec91c",
    "signer": "0x136A4e19270387bc21d7e58a9592D46864B0Ad57",
    "userId": "956002390"
  }
}