<?php
use Microsoft\Graph\Beta\GraphServiceClient;
use Microsoft\Graph\Beta\Generated\Models\SignInPreferences;
use Microsoft\Graph\Beta\Generated\Models\UserDefaultAuthenticationMethodType;
$graphServiceClient = new GraphServiceClient($tokenRequestContext, $scopes);
$requestBody = new SignInPreferences();
$requestBody->setUserPreferredMethodForSecondaryAuthentication(new UserDefaultAuthenticationMethodType('oath'));
$result = $graphServiceClient->users()->byUserId('user-id')->authentication()->signInPreferences()->patch($requestBody)->wait();