No send message from telegram bot to one signal?

Question

Yurii @Yuvis

Изучаю java

No send message from telegram bot to one signal?

Добрый день.
Создаю телеграмм бот, одной из задач которого, является отправка сообщения на сайт OneSignal, после чего с сайта уходят пуш-уведомления всем участникам бота. Я создал класс

PushNotification

public class PushNotification implements Push {

    public static final String REST_API_KEY = "***************";
    public static final String APP_ID = "***************";

    @Override
    public void sentPush(String message) {
        try{
            String jsonResponse;

            URL url = new URL("https://onesignal.com/api/v1/notifications");
            HttpsURLConnection connection = (HttpsURLConnection) url.openConnection();
            connection.setUseCaches(false);
            connection.setDoOutput(true);
            connection.setDoInput(true);

            connection.setRequestProperty("Content-Type", "application/json; charset=UTF-8");
            connection.setRequestProperty("Authorization", "Basic " + REST_API_KEY);
            connection.setRequestMethod("POST");

            String strJsonBody = "{"
                    + "\"app_id\": \"" + APP_ID + "\","
                    + "\"included_segments\": [\"All\"],"
                    + "\"data\": {\"foo\": \"bar\"},"
                    + "\"contents\": {\"en\": \""+ message +"\"}"
                    + "}";

            System.out.println("strJsonBody:\n" + strJsonBody);

            byte[] sendBytes = strJsonBody.getBytes(StandardCharsets.UTF_8);
            connection.setFixedLengthStreamingMode(sendBytes.length);

            OutputStream outputStream = connection.getOutputStream();
            outputStream.write(sendBytes);

            int httpResponse = connection.getResponseCode();
            System.out.println("httpResponse: " + httpResponse);

            jsonResponse = mountResponseRequest(connection,httpResponse);
            System.out.println("jsonResponse:\n" + jsonResponse);

        }catch (Throwable t) {
            t.printStackTrace();
        }
    }

    private String mountResponseRequest(HttpsURLConnection connection, int httpResponse) throws IOException {
        String jsonResponse;
        Scanner scanner;
        if (httpResponse >= HttpsURLConnection.HTTP_OK && httpResponse < HttpsURLConnection.HTTP_BAD_REQUEST) {
            scanner = new Scanner(connection.getInputStream(), StandardCharsets.UTF_8);
        }
        else {
            scanner = new Scanner(connection.getErrorStream(), StandardCharsets.UTF_8);
        }
        jsonResponse = scanner.useDelimiter("\\A").hasNext() ? scanner.next() : "";
        scanner.close();
        return jsonResponse;
    }
}

После нажатия кнопки в боте запрос уходит, но получаю ошибку

strJsonBody:
{"app_id": "*****************","included_segments": ["All"],"data": {"foo": "bar"},"contents": {"en": "delete"}}
httpResponse: 400
jsonResponse:
{"errors":["Invalid app_id format"]}

Значение