{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "302385956",
    "entityType": "User",
    "nonce": "0xef8632911c8395838f669b20fd58f8b4b306315a98d051cfcc7b0b4022a8ded8",
    "signature": "0xac5402bafb33cfeaea7fbde9c85c6f1ee5675ca76127ea6182a18e9f986742b8224e1988f8543df9e84fa161e6a944d03c80f8eb0ab55863815b4e18b2c4956f1b",
    "signer": "0x12EaF77464824447aA995e75Dd707B3e5246be9C",
    "userId": "409175645"
  }
}