```json
{
  "name": "edusphere-backend",
  "version": "1.0.0",
  "description": "Backend for EduSphere Admin Dashboard",
  "main": "server.js",
  "scripts": {
    "start": "node server.js",
    "dev": "nodemon server.js"
  },
  "dependencies": {
    "bcryptjs": "^2.4.3",
    "cookie-parser": "^1.4.6",
    "cors": "^2.8.5",
    "dotenv": "^16.0.3",
    "express": "^4.18.2",
    "express-rate-limit": "^6.7.0",
    "express-validator": "^6.15.0",
    "helmet": "^7.0.0",
    "jsonwebtoken": "^9.0.0",
    "mongoose": "^7.4.1",
    "morgan": "^1.10.0"
  },
  "devDependencies": {
    "nodemon": "^3.0.1"
  }
}
```

This backend setup includes:

1. **Server Configuration**:
   - Express.js server with middleware for security (helmet, rate limiting)
   - MongoDB connection with Mongoose
   - Environment variables for configuration

2. **Authentication**:
   - JWT-based authentication with cookies
   - User roles (admin, instructor, student)
   - Password hashing with bcrypt

3. **Models**:
   - User model with authentication methods
   - Course model with relationships to users

4. **Routes**:
   - Authentication routes (login, logout, current user)
   - Course CRUD operations with authorization
   - Basic structure for other resources (users, enrollments, certificates, payments)

5. **Middleware**:
   - Authentication middleware
   - Authorization middleware for role-based access
   - Error handling

To set up the backend:

1. Install Node.js and MongoDB
2. Create a new directory and add these files
3. Run `npm install` to install dependencies
4. Start MongoDB service
5. Run `npm run dev` to start the development server

The backend provides a RESTful API that can be consumed by your frontend admin dashboard. You'll need to connect your frontend to these API endpoints for data management.