{
  "manageEntity": {
    "action": "Save",
    "entityId": "1086915",
    "entityType": "Track",
    "nonce": "0x8fc0404ed7772a5dbc7fe5a1c36037976bab7b129f90b003c475e90bb193e81f",
    "signature": "0x060c5f6fec7846765a40c73d1beab228500f55be3b9cf275f5972f35b7e4bbb5334cd2fff0ffc168e3e83e9c60b38bd3810622256c59f0a6100f5bbf6c6d3f861c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}