Python Django Rest Post API without storage

I would like to create a web api with Python and the Django Rest framework. The tutorials that I have read so far incorporate models and serializers to process and store data. I was wondering if there's a simpler way to process data that is post-ed to my api and then return a JSON response without storing any data.

Currently, this is my urls.py

from django.conf.urls import url
from rest_framework import routers
from core.views import StudentViewSet, UniversityViewSet, TestViewSet

router = routers.DefaultRouter()
router.register(r'students', StudentViewSet)
router.register(r'universities', UniversityViewSet)
router.register(r'other', TestViewSet,"other")

urlpatterns = router.urls

and this is my views.py

from rest_framework import viewsets
from rest_framework.decorators import api_view
from rest_framework.response import Response
from .models import University, Student
from .serializers import UniversitySerializer, StudentSerializer

import json
from django.http import HttpResponse

class StudentViewSet(viewsets.ModelViewSet):
    queryset = Student.objects.all()
    serializer_class = StudentSerializer

class UniversityViewSet(viewsets.ModelViewSet):
    queryset = University.objects.all()
    serializer_class = UniversitySerializer

class TestViewSet(viewsets.ModelViewSet):    
    def retrieve(self, request, *args, **kwargs):
        return Response({'something': 'my custom JSON'})

The first two parts regarding Students and Universities were created after following a tutorial on Django setup. I don't need the functionality that it provides for creating, editing and removing objects. I tried playing around with the TestViewSet which I created.

I am currently stuck trying to receive JSON data that gets posted to the url ending with "other" and processing that JSON before responding with some custom JSON.