{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x428efd7bbfa89fb4fe4350fc54e65ba2407c4201f6577ee21652d5f055b654ef",
    "signature": "0xa5fb2c51b8f8b1e636a56e8d5d4ab7b934c074ffe34fa0af178274977fea6e6c057a0d6b9b86450c33b4faa7974126793994f88e0adaea42dcaea5f463190aa41c",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}