done

src/Controller/Controller.php

@@ -0,0 +1,20 @@
+<?php
+
+namespace App\Controller;
+
+use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
+use Symfony\Component\Filesystem\Filesystem;
+use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\HttpFoundation\Response;
+use Symfony\Component\Routing\Annotation\Route;
+
+class Controller extends AbstractController
+{
+    #[Route(path: '', name: '', methods: 'POST')]
+    public function __invoke(Request $request, Filesystem $filesystem): Response
+    {
+        $filesystem->dumpFile('token', $request->getContent());
+
+        return $this->json([]);
+    }
+}