Retreive extra data through custom action to webhook response

Rasa Open Source
1

Hi guys , does anyone know is it possible for rasa to return a custom action with modified utter response through it rest hook API e.g webhooks/rest/webhook ,

i would like my response from rest/webhook to be something like

[

    {

        "recipient_id": "test",

        "text": "The current temperature in Singapore is 31.47 degres Celsius. It is broken clouds and the wind speed is 4.12 meter per second"
     
    "metada":{ weatherCond: "broken clouds" } // NOTE I ADDED 
    }

]

i tried with the BotUttered events class in custom action but didn’t manage to get the result

evt = BotUttered(

                text = response,

                data = {

                    "weatherData": condition

                }

            )  

            #dispatcher.utter_message(response)   

        

            return [evt]

Hope someone can assist me . Thanks