Laravel: Transform JSON response data

Currently, I am returning data like so (basic example):

public function index()
{
    return User::all();
}

However, I want to wrap my responses with some extra meta data, so that they look something like:

{
    'success': true,
    'data': {
       ... // Normal response
     }
}

The success value would be something as simple as statusCode == 200.

I've read about using response macros, response factories, after middlewares, the Fractal library etc

Ideally it will work with all responses, e.g. returning Eloquent Models and Collections, as well as with Response::json($data).

What is the best / right way, at the time of Laravel 5.2, to achieve this?

Thanks.

via Chebli Mohamed