{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "190321",
    "entityType": "User",
    "nonce": "0x41a8e2fa721aa07cdc301aeaa8552cc377720a06ab1050b20bd93d808173fdda",
    "signature": "0x689abdcfa4590bd590569eb1b9724f2fb4dce13a57d8c6187b226baafbcfa9d767217a938d57e91235727cfebb713f4db5e92fe8d5720c5512ce470b2de795e81b",
    "signer": "0x809Db232a6131f46553BA571FB17bFA2cc58aeE9",
    "userId": "351386054"
  }
}