<s>[INST] This project involves creating a simple RESTful API using Node.js. The API should have the following endpoints:

1. `POST /users`: Creates a new user with the given name and email. The request body should contain the user's information in JSON format.

2. `GET /users`: Returns a list of all existing users.

3. `GET /users/:id`: Returns a specific user by id.

4. `PUT /users/:id`: Updates a user's information with the given id.

5. `DELETE /users/:id`: Deletes a user with the given id.

The project also involves using MongoDB for storing the user data.[/INST]