FaceId::addUser

static function addUser($binaryImageContent, $userId)
{
	$response = static::addInternal($binaryImageContent, 'add_user', 'BitrixFaceIdUsersTable');

	if (!empty($response['success']) && !empty($response['result']['added']))
	{
		$faceId = $response['result']['item']['face_id'];
		UsersTable::update($faceId, array('USER_ID' => $userId));
	}

	return $response;
}