{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x89d34848d0c3faecf9096fc6560ebe6aed31f2f278ba6fcc5982eb8a52440fbc",
    "signature": "0x2ff5458609021974fa0bbea71de98a3b75c03f796814b2f06a8890bb7fcd30555903176d3442f2bff29148ca6e96f9002817ad50cfa15aa0915486b9283946ec1b",
    "signer": "0x99FC58b9AbbC0C373045aaAE3Ca68Ac6e5b586f8",
    "userId": "590830414"
  }
}