{
  "manageEntity": {
    "action": "Save",
    "entityId": "1086923",
    "entityType": "Track",
    "nonce": "0x61aafe4651a35135dbd1d7b35361519dbf556062b49f9b842fc3e1f36041175d",
    "signature": "0xccacdfb497048095e6a7bedb1ed0922a2e8dbaab18830973128f4dcbea6f5a84370c42d61a7427816749dba64b6208f84abe95f24de0af3fe42388c755385ce41c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}