diff --git a/webapp/services/CallBack.php b/webapp/services/CallBack.php
index 38ea1a07..44122111 100644
--- a/webapp/services/CallBack.php
+++ b/webapp/services/CallBack.php
@@ -14,6 +14,8 @@ class CallBackService extends BaseService {
         'MarketPriceUpdateOrderOk' => 'MarketPriceUpdateOrderOk',
         'inappPurchase' => 'InAppPurchase',
         'outappPurchase' => 'OutAppPurchase',
+        'staked721' => 'Staked721',
+        'redeem721' => 'Redeem721',
     );
 
     public function dispatch($action)
diff --git a/webapp/services/callback/Redeem721.php b/webapp/services/callback/Redeem721.php
new file mode 100644
index 00000000..13a2372f
--- /dev/null
+++ b/webapp/services/callback/Redeem721.php
@@ -0,0 +1,23 @@
+<?php
+
+namespace services;
+
+require_once ('services/callback/common/SignatureService.php');
+require_once('mt/Item.php');
+require_once('mt/Hero.php');
+require_once('mt/Parameter.php');
+
+
+use mt\Item;
+use mt\Hero;
+use mt\Parameter;
+use phpcommon\SqlHelper;
+
+class Redeem721 {
+
+    public function process()
+    {
+        SignatureService::web3ServiceCheck();
+    }
+
+}
diff --git a/webapp/services/callback/Staked721.php b/webapp/services/callback/Staked721.php
new file mode 100644
index 00000000..31390fa6
--- /dev/null
+++ b/webapp/services/callback/Staked721.php
@@ -0,0 +1,25 @@
+<?php
+
+
+namespace services;
+
+require_once ('services/callback/common/SignatureService.php');
+require_once('mt/Item.php');
+require_once('mt/Hero.php');
+require_once('mt/Parameter.php');
+
+
+use mt\Item;
+use mt\Hero;
+use mt\Parameter;
+use phpcommon\SqlHelper;
+
+class Staked721
+{
+
+    public function process()
+    {
+        SignatureService::web3ServiceCheck();
+    }
+
+}