mapdev\FacebookMessenger\Messenger::setGreetingText PHP Метод

    public function setGreetingText($text)
    {
        return $this->api->callApi('me/thread_settings', ['setting_type' => 'greeting', 'greeting' => ['text' => MessengerUtils::checkStringEncoding(MessengerUtils::checkStringLength($text, 160), 'UTF-8')]]);
    }