{
  "manageEntity": {
    "action": "Save",
    "entityId": "316830",
    "entityType": "Track",
    "nonce": "0xd2d263265a848cf9c262c4409a39c90799a0fa34010c013a37da0c9ee6b75b18",
    "signature": "0xe927319a1dff514ca43c2573265348c440f047c7ea8891be18c2fb69a00b61ad44edae7f6f08e6dc5288cdc3bd7e470c81c8ea002156c7cf4d5fdb35bf8d41e71b",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}