Populating metadata and retrieving in custom code

Just so it is clear:

I want to be able to get the metadata json object passed by client into the actions.py parameters:


class Chitchat(Action):
    def name(self) -> Text:
        return "action_chitchat"

    def run(
        self,
        dispatcher: CollectingDispatcher,
        tracker: Tracker,
        domain: Dict[Text, Any],
    ) -> List[Dict[Text, Any]]:

I was thinking I would obtain the information from tracker object