{
  "manageEntity": {
    "action": "Save",
    "entityId": "1044102465",
    "entityType": "Track",
    "nonce": "0xeb263dd02c4c1f1654ecc1b7a54c2b596ba3fe3188a19ea718562bed811eedde",
    "signature": "0x53198c7e88420ea1cc5491cde6f71669ca0d5927c46e8f72f95788ddc546ea8f72e96b57f5c284b92782f6f507016b75341b12608a48fbff746574925572a65f1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}