{
  "manageEntity": {
    "action": "Save",
    "entityId": "393179126",
    "entityType": "Track",
    "nonce": "0x249f5bb6051c43310ae8b62c9bbe64d0c3db7158750981ae124d4628f94d1334",
    "signature": "0xcbd1234fb9bc66aa00f027d02e9352743a1066bfed81aad180eaa919dbe2ac2c414b163f8859b91f5dc326f816f1a792bb12144f0a8d9289e72c96bc322893cb1c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}