{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x2847e7bcaf1107c06ad1d4730b1e726c3abf4380101052152f08c93499866c1c",
    "signature": "0x5503d9035a27cd8f7c3cec057cc529c8d2cece9d58c48c731b9c5aaa8310f50e3df18016bc6b554c5c6323b1f098a71c16e97d161e4e97f42dd841f641c9a1d81b",
    "signer": "0x63d394E88B78FF653F4FCeB0AC74Cf5b064dfC34",
    "userId": "633246973"
  }
}