{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8a52e02f2536333925b5b77929b765b7cb4315ae7e9649bf54afd0328064c77e",
    "signature": "0x30c15851f5847215b78e99e84425ba405d94043a9f8bdd3bedcf82fb72ca48591d41a434eed2a77ddac9f05c817983786f689cf5c29d7ba70f4586b81efd4e381c",
    "signer": "0x2413679eD5Aa7730aDf989AFC81d0a69AEB061AB",
    "userId": "670006010"
  }
}