Django Rest Framework - how to pass kwargs to model.save()?

I have overridden the .save() method of one of my models to use an extra argument. My question is: how I can pass this argument through the serializer.save(). My code below:

class DeliveryCreate(generics.CreateAPIView):
    queryset = Delivery.objects.none()
    serializer_class = DeliverySerializer
    permission_classes = (permissions.DjangoModelPermissions, )

    def perform_create(self, serializer):
        serializer.save(permissions=(self.request.user,) ) #here, how to I do it?

In a normal view I do it like this: self.object.save(owner=self.request.user)

I have tried: serializer.save(permissions=(self.request.user,),owner=self.request.user ) and it does not work

Thanks for any help