code: def get(self, request, **kwargs):
  		
  		customer, _created = Customer.get_or_create(
  			subscriber=subscriber_request_callback(self.request)
  		)
  
  		serializer = SubscriptionSerializer(customer.subscription)
  		return Response(serializer.data)
docs: Return the customer's valid subscriptions.
  
  		Returns with status code 200.