Parse: Unauthorized in REST API

I'm trying to send a push notification from my Java code consuming the Parse REST API with Jersey.

    Client client = Client.create();

    WebResource webResource = client.resource("");

    //My real id instead of XXXXXXXXXXXXXXXXXXXXXXXX    
    webResource.header("X-Parse-Application-Id", "XXXXXXXXXXXXXXXXXXXXXXXXXXXXX");

    //My real key instead of XXXXXXXXXXXXXXXXXXXXXXXX 
    webResource.header("X-Parse-REST-API-Key", "XXXXXXXXXXXXXXXXXXXXXXXXXXXXX");

    Map<String, Object> postData = new LinkedHashMap<>();
    postData.put("channels", Arrays.asList("")); //Broadcast notification

    Map<String, String> notificationData = new LinkedHashMap<>();
    notificationData.put("alert", "This is a notification");

    postData.put("data", notificationData);

    //Convert POST data to String
    String postDataAsStr = "";
    ObjectMapper objectMapper = new ObjectMapper();
    try {
        postDataAsStr = objectMapper.writeValueAsString(postData);
    } catch (JsonProcessingException e) {

    ClientResponse response = webResource
                    .post(ClientResponse.class, postDataAsStr);

POST data is like:

{"channels":[""],"data":{"alert":"This is a notification"}}

But I am getting:



Solved. I have added the headers this way:

 ClientResponse response = webResource
                .header("X-Parse-Application-Id", "XXXXXXXXXXXXXXXXXXXXXXXXXX")
                .header("X-Parse-REST-API-Key", "XXXXXXXXXXXXXXXXXXXXXXXXX")
                .post(ClientResponse.class, postDataAsStr);

It looks like you need to add "Authorization" header as well.

webResource.header("Authorization", String.format("Negotiate %s", createTicket())

createTicket() implementation depends on your authorization method.

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