{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "645720561",
    "entityType": "User",
    "nonce": "0x4def0d586243580a5d94c7ac3811e2a4991d85a0d223e95e5fe582c28a56f2f3",
    "signature": "0xcf2072b7536be09db31257d027a48f069e75a67880fda7fe92a613913cdc78212d08971e6cabbde149ad858fc23f55c0ba5eecd731de0ad217f58bce813400771b",
    "signer": "0x1ABf6DD41fe1E6b1C2d3A69859a25C92caa31b32",
    "userId": "17689"
  }
}