def create(self, validated_data):
instance = User()
blog = Blog()
instance.first_name = validated_data.get("first_name")
instance.last_name = validated_data.get("last_name")
instance.username = validated_data.get("username")
instance.email = validated_data.get("email")
instance.set_password(validated_data.get("password"))
instance.save()
blog.blog_title = self.initial_data.get('blog_title')
blog.user = instance
blog.save()
return instance
