{
  "manageEntity": {
    "action": "Save",
    "entityId": "280041912",
    "entityType": "Track",
    "nonce": "0xf0963fbedfdd24ea817457cdc60e38c64c0639577e84c6451875767822a44df7",
    "signature": "0xa6070b79e4280102d54b2de895d48374a7e4c3b36b9dbf2f893f236c413e19175b1c878c1c680fadc78d6d6f2739968fcb586dd45fb232f3b4785f54c67ef7bd1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}