{
  "manageEntity": {
    "action": "Save",
    "entityId": "193511",
    "entityType": "Track",
    "nonce": "0xf8377b8ab0913d6f50d495d324a167b7197fd783ab5584c5c4cdd125d0c84b25",
    "signature": "0x02c15f2fe46a2127207b49f7cbb01a262bac8c88b5583f79fa33f1c257733a103e7f0bde831cd89fd298ed34edc1612b34d99f9d4b58bb2c24c6c94caf1ea4821c",
    "signer": "0x036B1ee0d2003ae5B5E252d58647d13f0e588EEB",
    "userId": "161353174"
  }
}