curl --request GET \
  --url http://localhost:3000/v1/scanner/staff

{
  "employees": [
    {
      "id": "<string>",
      "displayName": "<string>",
      "firstName": "<string>",
      "lastName": "<string>",
      "email": "<string>",
      "phone": "<string>",
      "pin": "<string>",
      "active": true,
      "deputyEmployeeId": 123,
      "role": "<string>",
      "operationalUnits": [
        123
      ]
    }
  ],
  "deputy_configured": true,
  "total": 123,
  "error": "<string>",
  "message": "<string>"
}