{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "469781621",
    "entityType": "User",
    "nonce": "0xd02d88e5ddc971c152928a27a07efe2dfa553ccffb49fdd45a3837d8b3f914a3",
    "signature": "0x73044fe0b5da7f56bf3a90fb4c6c911dd38cebf3e3fb7b38875b330a8278333133dded6d8c37f18debe040ea5536d5c126623736dabf8c9cb4fb53e4005e60691c",
    "signer": "0xd489B786708CDd8661b152CFF27695dC12c8c0C9",
    "userId": "647391197"
  }
}