<?php
use Microsoft\Graph\GraphServiceClient;
use Microsoft\Graph\Generated\Models\EntitlementManagementSettings;
use Microsoft\Graph\Generated\Models\AccessPackageExternalUserLifecycleAction;
$graphServiceClient = new GraphServiceClient($tokenRequestContext, $scopes);
$requestBody = new EntitlementManagementSettings();
$requestBody->setExternalUserLifecycleAction(new AccessPackageExternalUserLifecycleAction('none'));
$result = $graphServiceClient->identityGovernance()->entitlementManagement()->settings()->patch($requestBody)->wait();