docs: def get(self):
          """
          Get a JSON-ready representation of this SubscriptionTracking.
  
          :returns: This SubscriptionTracking, ready for use in a request body.
          :rtype: dict
          """
          subscription_tracking = {}
          if self.enable is not None:
              subscription_tracking["enable"] = self.enable
  
          if self.text is not None:
              subscription_tracking["text"] = self.text.get()
  
          if self.html is not None:
              subscription_tracking["html"] = self.html.get()
  
          if self.substitution_tag is not None:
              subscription_tracking["substitution_tag"] = \
                  self.substitution_tag.get()
          return subscription_tracking