{
  "manageEntity": {
    "action": "Save",
    "entityId": "1677224463",
    "entityType": "Track",
    "nonce": "0xefba717ed5ef077c8a7ed82fe2a6140e85bf23ddb1470f1aeda3907c367a00c3",
    "signature": "0x683590af0be9dd40dcc3da37337f5901c28e59beaa20da23f924ff99a6f1b4992ef2a51122904972b74e8b5fc4fe7197ebcd8436bdaeecd532d3ce5b45b8b0ec1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}