{
  "manageEntity": {
    "action": "Save",
    "entityId": "1324858916",
    "entityType": "Track",
    "nonce": "0xf94079ab176f72183e7383939dadeeacd38b3f6e07548a2df1287b96314eab06",
    "signature": "0x5750e30456876f29b231bb515ce72d7ac57ee2381899bb6e30cd390edd93ff8c0f838670ed62b9b8ee53e9d8a3f3c78f3aea9a598641650787adb77d72b015ca1b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}