{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "665",
    "entityType": "User",
    "nonce": "0x43501e6258b394078fe4fb15f4e805e5853ba3792aa9eebc9d2c2156a93ecfd7",
    "signature": "0x3d226869f34bf72cf73c9697628a738c8169654f8334a632912c995e56874915522031926418f75706988024e660c8918d9d119578c06b13f2ac4ad3654318c01c",
    "signer": "0xE795526f098824a87a94C79d58a4299b51b20a3c",
    "userId": "837713671"
  }
}