{
  "manageEntity": {
    "action": "Save",
    "entityId": "1080279443",
    "entityType": "Track",
    "nonce": "0x43ccb4e09a747a7394d6d93c22c7ca9ad60163df9f00c5e600af5b929a53dfca",
    "signature": "0xfdf4c075507e43d4bf437ff42dfdeb8ff0ab06f02a6b2201ff0983835207d0066a90458f536c89efbbe1db9a696853be082ca9acc6023d989818f4867f9e20d31b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}