{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "4785",
    "entityType": "User",
    "nonce": "0x9eba03d59f58ce3b1ced21d7651b3100be7ec77bc90074febe365413ec7579b0",
    "signature": "0x730f7853a999b220fea79fcb403a5f384c4aedbbf5ca5d49eafd98c0c5260f192eb9d5bde260c51dfa6a01cd9eb9ce135e34ad7b626d108ae5ea8a39453dacc21b",
    "signer": "0x12EaF77464824447aA995e75Dd707B3e5246be9C",
    "userId": "409175645"
  }
}