{
  "manageEntity": {
    "action": "Save",
    "entityId": "1695864990",
    "entityType": "Track",
    "nonce": "0x51e7d6e9cf244d233a29cfde39019dba57c7686f9769c619949500d1c95e8e14",
    "signature": "0xa1894c8124556eb148b550667f6cc16cce4789b0d8e3086edbe6af56a10cd17f3b5961cd22b8d2dfbfa9bfefb1503093c1515a7e3c41ab01d31231a7ed7cd27f1c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}