{
  "manageEntity": {
    "action": "Save",
    "entityId": "1702754271",
    "entityType": "Track",
    "nonce": "0xe08966750983dd59e2301a86c441bfee8c3ffd575b71f8b09d8f6195aa3ead88",
    "signature": "0xc4e85bf6efa62d52170905eb6a58c6af11a6d48f502c6432b1e31206175d5fe63199c0d7298d674218aa3086019cfcd9e67d27e4e338433354d550065ef580781c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}