need help with django-rest-framework-mongoengine

i created these classes:

class UserViewSet(ModelViewSet):
queryset = User.objects.all()
serializer_class = UserSerializer


class UserSerializer(DocumentSerializer):

class Meta:
model = User

class User(Document):
email = StringField(primary_key=True)
name = StringField(required=True)


but for some reason the serialization doesn't work correctly when i try to POST request.


requirements:

django>=3.*,<4.*
markdown
django-filter
mongoengine
djangorestframework
django-rest-framework-mongoengine