<?php

final class TestController extends SomeBaseController
{
    private $someService;

    public function __construct(SomeService $someService)
    {
        parent::__construct($someService);
        $this->someService = $someService;
    }

    public function test(Request $request): JsonResponse
    {
        $type  = $request->request->get('type');
        $event = $request->request->get('event');
        //Now you can manipulate this vars.
        $this
          ->someService
          ->execute($type, $event);
    }
}