{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "50672",
    "entityType": "User",
    "nonce": "0x4389ab87c528709850d4172dff0230223354967f61a6698d436fea6bab85f58b",
    "signature": "0x3ea7a0b3cbb87933282b55bac4f9cde6fb88e1b5a368989b15597fe9199677a94a48dae9e55c4b50f726eabc66cc8acd4ae321b9d1d3a0fb8105d83a088928661c",
    "signer": "0x52F331C086a11941E738a6C86d9F127E934dDEB1",
    "userId": "281470566"
  }
}