code: def process_subscription_data(post_data):
      
      subscription_data = post_data.pop("subscription", {})
      # As our database saves the auth and p256dh key in separate field,
      # we need to refactor it and insert the auth and p256dh keys in the same dictionary
      keys = subscription_data.pop("keys", {})
      subscription_data.update(keys)
      # Insert the browser name
      subscription_data["browser"] = post_data.pop("browser")
      return subscription_data
docs: Process the subscription data according to out model