How to Use Nested JSON as Input in the Playground

Hello, team! When we test our dataset in a playground, I have a nested json as my input. json input: { "current_report": "", "messages": [ { "content": "", "additional_kwargs": {}, "response_metadata": {}, "id": "" } ], "highlighted_report_section": "", "runtime_functions": [ { "ID": "", "description": "" } ], "mode": "", "approved_report_plan": null, "environment_id": "", "field_documentation": "", "sample_data_context": "{}", "cached_processed_documentation": "" } what is the Correct way to give this as input in the playground?