public function handle($request, Closure $next)
{
$secret = $request->projects->github_webhook_secret;
if (isset($secret)) {
$signature = 'sha1=' . hash_hmac('sha1', $request->getContent(), $secret);
if ($signature !== $request->header('X-Hub-Signature')) {
abort(401);
}
}
return $next($request);
}