Summary
The user seeks a method to validate an input string in a user interface to ensure it is formatted as JSON, preferring to copy the input value instead of using a default JSON value. They emphasize the need for structure validation in a free input field that must be JSON parsable and request a Python code example or task. The user provides a code snippet and notes that using Union[str, List[Dict[str, str]]] leads to UI issues. They mention using a dataclass for a screenshot but state that it doesn't work with map_task, indicating a lack of options.