Add example submission

app.py

@@ -55,6 +55,11 @@ with st.form(key="form"):
         data = str(uploaded_file.read(), "utf-8")
         json_data = json.loads(data)
 
+    with st.expander("Example submission"):
+        with open("submission.json", "r") as f:
+            example_submission = json.load(f)
+            st.json(example_submission)
+
     token = st.text_input(
         "Access token",
         type="password",