$id = 'id customer or null'
$customerService = $this->adWordsServices->get($this->session, CustomerService::class);
$customers = $customerService->getCustomers($id);
foreach ($customers as $item) {
$result[] = [
'Id' => $item->getCustomerId(),
'Name' => $item->getDescriptiveName(),
'СurrencyCode' => $item->getCurrencyCode(),
'DateTimeZone' => $item->getDateTimeZone(),
'isManagerAccount' => $item->getCanManageClients(),
];
}