Windows Phone 7 - 是否可以添加其他键/值来推送通知消息

using System.Net.Http;
using System.Text;
using Microsoft.Graph;

// ...

public async Task SendNotificationAsync(string message)
{
    var client = new HttpClient();
    var content = new StringContent(message, Encoding.UTF8, "application/json");
    var request = new HttpRequestMessage
    {
        Method = HttpMethod.Post,
        RequestUri = new Uri("https://graph.microsoft.com/v1.0/notifications"),
        Content = content
    };
    request.Headers.Add("Authorization", "Bearer YOUR_ACCESS_TOKEN_HERE");
    var response = await client.SendAsync(request);
    if (response.IsSuccessStatusCode)
    {
        // Notification sent successfully
    }
    else
    {
        // Error occurred while sending notification
    }
}