#view 
    def update_status(self, request):
        serializer = self.get_serializer(data=request.data)
        serializer.is_valid(raise_exception=True)
        serializer.update_status()
        return Response()


#serializer

leads = serializers.PrimaryKeyRelatedField(many=True,
                                               queryset=Lead.objects.all())

def validate()...

@transaction.atomic()
    def update_status(self):
        revisions = list()
        for i in self.validated_data['leads']:
            i.status = self.validated_data['status']
            i.save()