{
  "manageEntity": {
    "action": "Save",
    "entityId": "1822764224",
    "entityType": "Track",
    "nonce": "1784268300715372551",
    "signature": "0x9566d3052bc926e54c4b5ebe728932db915377c3d81e29731b521fa69a04f586261c9cd6e21754aa3bcfe442d6d13feb46eb47fdf563f16e230b9afad7c26cf11c",
    "signer": "0x2cc593FC814461263d282A84286Fd4F72c79562e",
    "userId": "143127"
  }
}