{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0xabcc5d7ba1405c3ba9bb53e300005d3ed4fb4cdd7b39bd8f012ecec9381917e0",
    "signature": "0xd0f4aa4bd3e02f29d1bddcd64422132846fcb332db51565abd2ff3e033feea5d5d1ad46a74bb114f6cf33473cd742d146c3341ee86d6b069b8a649f14369afd91c",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}