app/Http/Middleware/EnsureActiveSubscription.php

<?php

namespace App\Http\Middleware;

use Closure;
use Illuminate\Http\Request;
use Symfony\Component\HttpFoundation\Response;

class EnsureActiveSubscription
{
    public function handle(Request $request, Closure $next): Response
    {

        $user = $request->user();

        if (!$user) {
            return response()->json([
                'message' => 'Unauthenticated'
            ], 401);
        }

        if (!$user->subscribed('default') && !$user->isFree()) {
            return response()->json([
                'message' => 'Active subscription required'
            ], 403);
        }

        return $next($request);
    }
}