{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x49916170675a0aef2ee8d005577bc6dea5655ed1c9c367d32599cfa37c56cf56",
    "signature": "0x67f3133e631d01399750e1585875ea0c22f00050dabc61c09896338b98e668955dc74ab57d982265b7d2866715dd007e0ee50cbf435f75ca2775a5de09a2135f1b",
    "signer": "0xdD03ED106abBEF4982159500e32B8602B985a69B",
    "userId": "444965341"
  }
}