Добавлен Payload в Update для поддержки deeplinks в соответствии с документацией https://dev.max.ru/docs/chatbots/bots-coding/prepare#Создание%20диплинка%20бота

Author: KonstantinKaretnikov

src/Max.Bot/Types/Converters/UpdateJsonConverter.cs

@@ -90,6 +90,11 @@ public override Update Read(ref Utf8JsonReader reader, Type typeToConvert, JsonS
             update.IsMuted = isMutedElement.GetBoolean();
         }
 
+        if (root.TryGetProperty("payload", out var payload))
+        {
+            update.Payload = payload.GetString();
+        }
+
         return update;
     }
 

src/Max.Bot/Types/Update.cs

@@ -59,6 +59,12 @@ public class Update
     [JsonPropertyName("message")]
     public Message? Message { get; set; }
 
+    /// <summary>
+    /// Gets or sets the payload
+    /// </summary>
+    [JsonPropertyName("payload")]
+    public string? Payload { get; set; }
+
     /// <summary>
     /// Gets or sets the callback query in this update.
     /// Present in: message_callback.