django prototype with web service

I need a prototype web app that requires web services JSON to communicate as the back end with mobile devices. The project is a web site, with mysql db, users login for different type of privileges, admin user: CRUD: Business, Clients Business user: CRUD simple db entities client user: CRUD simple db entities CRUD: Create Update Restore Delete Web services needed for CRUD operations, simple logic for web and schema for DB will be provided simple wire frame for 3 kind of users provided Next stage, implement UI, more logic implementation, push notifications