{
  "manageEntity": {
    "action": "Save",
    "entityId": "1154833070",
    "entityType": "Track",
    "nonce": "0x64e704b2d2a3154d0a04dbc76659d238329048add3b70a030c76c5668007e362",
    "signature": "0xfded2f36ecb790695d23fd378e9c99f79668caa938bd0e31323ce5c6c393a2b45dac8308fd5b741890235eb1fe32cb0819ddddd3a68fc651d6714d3782dea9f61c",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}