C# Facebook webhook api返回JSON

using System;
using Newtonsoft.Json;

public class FacebookWebhookData
{
    [JsonProperty("object")]
    public string Object { get; set; }

    [JsonProperty("entry")]
    public FacebookWebhookEntry[] Entries { get; set; }
}

public class FacebookWebhookEntry
{
    [JsonProperty("id")]
    public string Id { get; set; }

    [JsonProperty("time")]
    public long Time { get; set; }

    [JsonProperty("messaging")]
    public FacebookWebhookMessaging[] Messaging { get; set; }
}

public class FacebookWebhookMessaging
{
    [JsonProperty("sender")]
    public FacebookWebhookSender Sender { get; set; }

    [JsonProperty("recipient")]
    public FacebookWebhookRecipient Recipient { get; set; }

    [JsonProperty("message")]
    public FacebookWebhookMessage Message { get; set; }
}

public class FacebookWebhookSender
{
    [JsonProperty("id")]
    public string Id { get; set; }
}

public class FacebookWebhookRecipient
{
    [JsonProperty("id")]
    public string Id { get; set; }
}

public class FacebookWebhookMessage
{
    [JsonProperty("mid")]
    public string Mid { get; set; }

    [JsonProperty("text")]
    public string Text { get; set; }
}

public class Program
{
    public static void Main()
    {
        string json = "{ \"object\": \"page\", \"entry\": [ { \"id\": \"PAGE_ID\", \"time\": 123456789, \"messaging\": [ { \"sender\": { \"id\": \"USER_ID\" }, \"recipient\": { \"id\": \"PAGE_ID\" }, \"message\": { \"mid\": \"MESSAGE_ID\", \"text\": \"Hello, World!\" } } ] } ] }";

        FacebookWebhookData data = JsonConvert.DeserializeObject<FacebookWebhookData>(json);

        Console.WriteLine("Object: " + data.Object);
        Console.WriteLine("Entry ID: " + data.Entries[0].Id);
        Console.WriteLine("Time: " + data.Entries[0].Time);
        Console.WriteLine("Sender ID: " + data.Entries[0].Messaging[0].Sender.Id);
        Console.WriteLine("Recipient ID: " + data.Entries[0].Messaging[0].Recipient.Id);
        Console.WriteLine("Message ID: " + data.Entries[0].Messaging[0].Message.Mid);
        Console.WriteLine("Message Text: " + data.Entries[0].Messaging[0].Message.Text);
    }
}