curl --request GET \
  --url http://localhost:8080/cabinet/admin/ban-system/settings/{key}

{
  "key": "<string>",
  "value": "<unknown>",
  "type": "<string>",
  "min_value": 123,
  "max_value": 123,
  "editable": true,
  "description": "<string>",
  "category": "<string>"
}