Update app.py

app.py

@@ -620,7 +620,7 @@ with gr.Blocks() as bc:
                 with gr.Column():
                     block_text_send = gr.Textbox()
                     trans_data_send = gr.Dataframe()
-                    json_out_send = gr.Textbox()
+                    json_out_send = gr.JSON()
                     chain_json_send = gr.JSON()            
                 with gr.Column():
                     block_text_rec = gr.Textbox()