{
  "manageEntity": {
    "action": "Save",
    "entityId": "1027012149",
    "entityType": "Track",
    "nonce": "0xe00e10e165fb3e4105d0fdfeb5f610c98cfccd3ce7ebfcd071714659e306f0aa",
    "signature": "0x416b6c62c4881b6316e0f75521bbd414918cdf7facad74f74733e3a7b8bae0bc6254821efcedba6574db938ab9cdce429dccc614f47b70404fae610b8e1408b31b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}