{
  "manageEntity": {
    "action": "Save",
    "entityId": "2130085666",
    "entityType": "Track",
    "nonce": "0x3334b58aca089a158bf6d18a5315e73ba7d7870f6e034e9ac2984d3e98a5f069",
    "signature": "0xfe8395c0e7c27f18e3e0a98202193fd4039c23e5c9cfac055b66abd6dbfef5bf27d2d6299f159379e8a6377473641c9c370f3eb3db8131a297b5ca78b7eaf39f1b",
    "signer": "0xd1bC12b8b46f2FAa152aB791052b4a26826F86F5",
    "userId": "481080235"
  }
}