{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x571872af467214102b5c4b5486d67f163562b3b7124504f7dae6826b2255b66c",
    "signature": "0x973ec8f7ecdf35c929b933edcabd71364f31cf40209608a8efed81e9d7737f6a79a1d5ba9111f1e6ce63f59b6d81ecff7b6a6da64be47d982622ff6b6a3306851c",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}