{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x2738a9ab4bb564de5d16f9039ecd18d54216eb4cdfba2f41cc95a16bc95982db",
    "signature": "0xe99502412e18ee09550863954d9546894683faf4d1f11756c2806c52d2cc5acc3c9c4129dbb797178c887639a4745c8152ca26000ef79cd5f9a46504c25c30b31c",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}