{
  "manageEntity": {
    "action": "Save",
    "entityId": "1939480966",
    "entityType": "Track",
    "nonce": "0x950a1ef3b6667efb49f27951cecf3383a4436bace551c622cfd0ef3bf41b8630",
    "signature": "0x344f58ddc1f88bf576a3dd82692518811e6f062dba593083b51c77094888e6ef46e1563d39f3ec3c2ed2a7573a731f1efa2b6ae925542f6890ba1507cf1909de1b",
    "signer": "0xc5b313A105704f34A9E49765708F417368EF84E5",
    "userId": "233495387"
  }
}