{
  "manageEntity": {
    "action": "Save",
    "entityId": "97874510",
    "entityType": "Track",
    "nonce": "0xa1385aeec64e085737c81ddb5d3cedad841bd9b472118d2dd16c03768e752bc5",
    "signature": "0x85dd04549dd5971ddbef58dc8ec41dd11de8071d5ebb6a337528d872513c9ac957607822eb22c2b4d08c7cfda8a7c5353d8e246cda40f21973bb62b99e1fb24a1b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}