var client = HttpClient.newHttpClient();

    var httpRequest = HttpRequest.newBuilder()
            .uri(new URI(apiUrl))
            .version(HttpClient.Version.HTTP_2)
            .header("Content-Type", "application/json")
            .header("Authorization", "Basic " + DatatypeConverter.printBase64Binary(userPassword.getBytes()))
            .POST(HttpRequest.BodyPublishers.ofByteArray(request))
            .build();

    HttpResponse.BodyHandler<String> bodyHandler = HttpResponse.BodyHandlers.ofString();

    CompletableFuture<HttpResponse<String>> future = client.sendAsync(httpRequest, bodyHandler);
    future.thenApply(HttpResponse::body)
            .thenAccept(System.out::println)
            .join();