Update app.py

app.py

@@ -467,8 +467,8 @@ def handle_incoming_request():
                 ]
             }
             headers = {
-                'Content-Type': 'application/json',
-                'Accept': 'application/json'
+                'Authorization': f'Bearer {token}',
+                'Content-Type': 'application/json'
             }
             response = requests.post(f"{base_url}/email/lists/560783/recipients", json=data, headers=headers)