{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0xb5be80b32a30b49a816eaa5ef9d88170fae76cb894678c7628de69b8e1a2fa18",
    "signature": "0x8dd41c837d86b6969f3e29964fdce9f1a5603b0c350612d1317036e4e80d1c0a0aa849a1c86589a0e99c87f2d1eab7be869d8068b60aa76da555c07c016383f01c",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}