{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x283210fca36ab8856e02803b43d546ff0c2cd764b8a816ec6d8d94ec8ed0f6ff",
    "signature": "0xf1c5f708bfac86965ba2ff69149ca5cac9d9e92a900def002673d89cabf330df0bb24ba2ff6be5aec785d962b2faba64dbe62b2c13cf964228d3cd29fb816ebf1c",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}