{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "50576",
    "entityType": "User",
    "nonce": "0xf8ab51b110df89bf6cece579200ecab4e46d35d95e3b105154478370961fd397",
    "signature": "0x10a37776e577380eb10108b0d92c7e0bcff62d95b6192d43176175b67eaf310a3023e6a714d9079bf7ba9de27f308185c24ccb510c04c8012c5c9b80e283ac691b",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}