Firebase push notification service

PushNotificationService.cs

using System;
using System.Collections.Generic;
using System.IO;
using System.Net;
using System.Text;
using System.Web.Script.Serialization;

namespace Core.Foundation.Notification.Services
{
  [Service(typeof(IPushNotificationService))]
  public class PushNotificationService : IPushNotificationService
  {
    /// <summary>
    /// The log service
    /// </summary>
    private readonly ILogService _logService;

    /// <summary>
    /// Initializes a new instance of the <see cref="PushNotificationService"/> class.
    /// </summary>
    /// <param name="logService">The log service.</param>
    public PushNotificationService(ILogService logService)
    {
      _logService = logService;
    }
    /// <summary>
    /// Sends the push notification.
    /// </summary>
    /// <param name="title">The title.</param>
    /// <param name="body">The body.</param>
    /// <param name="token">The token.</param>
    /// <returns><c>true</c> if XXXX, <c>false</c> otherwise.</returns>
    public bool SendPushNotification(string title, string body, List<string> token)
    {
      try
      {
        var applicationID = NotificationAppSetting.ApplicationID;
        var senderId = NotificationAppSetting.SenderID;

        WebRequest tRequest = WebRequest.Create("https://fcm.googleapis.com/fcm/send");
        tRequest.Method = "post";
        tRequest.ContentType = "application/json";

        var data = new
        {
          registration_ids = token,
          notification = new
          {
            title = title,
            body = body
          }
        };

        var serializer = new JavaScriptSerializer();
        var json = serializer.Serialize(data);

        Byte[] byteArray = Encoding.UTF8.GetBytes(json);

        tRequest.Headers.Add(string.Format("Authorization: key={0}", applicationID));
        tRequest.Headers.Add(string.Format("Sender: id={0}", senderId));
        tRequest.ContentLength = byteArray.Length;

        using (Stream dataStream = tRequest.GetRequestStream())
        {
          dataStream.Write(byteArray, 0, byteArray.Length);
          using (WebResponse tResponse = tRequest.GetResponse())
          {
            using (Stream dataStreamResponse = tResponse.GetResponseStream())
            {
              using (StreamReader tReader = new StreamReader(dataStreamResponse))
              {
                String sResponseFromServer = tReader.ReadToEnd();
                _logService.Info($"ServerResponse:{sResponseFromServer}");
              }
            }
          }
        }
      }
      catch (Exception ex)
      {
        _logService.Error($"Core.Foundation.Notification.Services.PushNotification: {ex.StackTrace}");
        return false;
      }
      return true;
    }
  }
}