{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0xd4110d259ff91696cda57331a30f987242ed6867dd3791ca55aefe925b8e4541",
    "signature": "0x350e007dd67feda64c1141d780cf3ccc14ad95ebda1cdc9870da090913b1dd3a680b01b93f3530730f770697b7409950241de45d062cbf6801cfd566fdeba4c61b",
    "signer": "0xBDB0D4b954b76aa82E858272129d43b54aa159f2",
    "userId": "745218801"
  }
}