{
  "manageEntity": {
    "action": "Save",
    "entityId": "240303",
    "entityType": "Track",
    "nonce": "0xa7af61d8740b5c436c56d448577163f4753e0a8a56d8175da9622aa70fdd26c8",
    "signature": "0x263344a8eab294baffa53cccacb883eb40ae7ae219086c50cc64e61ffbd1823e10264ca2571bc9212393a86b4f6f73449822fce3b88cbe6ac84f373d63e925d21c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}