diff --git a/lib/Alchemy/Phrasea/Core/Event/Subscriber/WebhookSubdefEventSubscriber.php b/lib/Alchemy/Phrasea/Core/Event/Subscriber/WebhookSubdefEventSubscriber.php
new file mode 100644
index 0000000000..ca5d88b2ab
--- /dev/null
+++ b/lib/Alchemy/Phrasea/Core/Event/Subscriber/WebhookSubdefEventSubscriber.php
@@ -0,0 +1,75 @@
+<?php
+
+namespace Alchemy\Phrasea\Core\Event\Subscriber;
+
+use Alchemy\Phrasea\Core\Event\Record\RecordEvents;
+use Alchemy\Phrasea\Core\Event\Record\SubDefinitionCreatedEvent;
+use Alchemy\Phrasea\Core\Event\Record\SubDefinitionCreationFailedEvent;
+use Alchemy\Phrasea\Core\Event\Record\SubDefinitionsCreatedEvent;
+use Alchemy\Phrasea\Model\Entities\WebhookEvent;
+use Silex\Application;
+use Symfony\Component\EventDispatcher\EventSubscriberInterface;
+
+class WebhookSubdefEventSubscriber implements EventSubscriberInterface
+{
+    private $app;
+
+    public function __construct(Application $app)
+    {
+        $this->app = $app;
+    }
+
+    public function onSubdefCreated(SubDefinitionCreatedEvent $event)
+    {
+        $eventData = [
+            'databox_id'    => $event->getRecord()->getDataboxId(),
+            'record_id'     => $event->getRecord()->getRecordId(),
+            'subdef'        => $event->getSubDefinitionName()
+        ];
+
+        $this->app['manipulator.webhook-event']->create(
+            WebhookEvent::RECORD_SUBDEF_CREATED,
+            WebhookEvent::RECORD_SUBDEF_TYPE,
+            $eventData
+        );
+    }
+
+    public function onSubdefCreationFailed(SubDefinitionCreationFailedEvent $event)
+    {
+        $eventData = [
+            'databox_id'    => $event->getRecord()->getDataboxId(),
+            'record_id'     => $event->getRecord()->getRecordId(),
+            'subdef'        => $event->getSubDefinitionName()
+        ];
+
+        $this->app['manipulator.webhook-event']->create(
+            WebhookEvent::RECORD_SUBDEF_FAILED,
+            WebhookEvent::RECORD_SUBDEF_TYPE,
+            $eventData
+        );
+    }
+
+    public function onSubdefsCreated(SubDefinitionsCreatedEvent $event)
+    {
+        $eventData = [
+            'databox_id'    => $event->getRecord()->getDataboxId(),
+            'record_id'     => $event->getRecord()->getRecordId(),
+            'subdef_count'  => count($event->getMedia())
+        ];
+
+        $this->app['manipulator.webhook-event']->create(
+            WebhookEvent::RECORD_SUBDEFS_CREATED,
+            WebhookEvent::RECORD_SUBDEF_TYPE,
+            $eventData
+        );
+    }
+
+    public static function getSubscribedEvents()
+    {
+        return [
+            RecordEvents::SUB_DEFINITION_CREATED            => 'onSubdefCreated',
+            RecordEvents::SUB_DEFINITIONS_CREATED           => 'onSubdefsCreated',
+            RecordEvents::SUB_DEFINITION_CREATION_FAILED    => 'onSubdefCreationFailed'
+        ];
+    }
+}
diff --git a/lib/Alchemy/Phrasea/Core/Provider/WebhookServiceProvider.php b/lib/Alchemy/Phrasea/Core/Provider/WebhookServiceProvider.php
index 4b280c92f0..43a5aeafa4 100644
--- a/lib/Alchemy/Phrasea/Core/Provider/WebhookServiceProvider.php
+++ b/lib/Alchemy/Phrasea/Core/Provider/WebhookServiceProvider.php
@@ -2,6 +2,7 @@
 
 namespace Alchemy\Phrasea\Core\Provider;
 
+use Alchemy\Phrasea\Core\Event\Subscriber\WebhookSubdefEventSubscriber;
 use Alchemy\Phrasea\Webhook\EventProcessorFactory;
 use Alchemy\Phrasea\Webhook\EventProcessorWorker;
 use Alchemy\Phrasea\Webhook\WebhookInvoker;
@@ -10,6 +11,7 @@ use Alchemy\Worker\CallableWorkerFactory;
 use Alchemy\Worker\TypeBasedWorkerResolver;
 use Silex\Application;
 use Silex\ServiceProviderInterface;
+use Symfony\Component\EventDispatcher\EventDispatcher;
 
 class WebhookServiceProvider implements ServiceProviderInterface
 {
@@ -58,6 +60,14 @@ class WebhookServiceProvider implements ServiceProviderInterface
                 return $resolver;
             }
         );
+
+        $app['dispatcher'] = $app->share(
+            $app->extend('dispatcher', function (EventDispatcher $dispatcher, Application $app) {
+                $dispatcher->addSubscriber(new WebhookSubdefEventSubscriber($app));
+
+                return $dispatcher;
+            })
+        );
     }
 
     private function createAlias(Application $app, $alias, $targetServiceKey)
@@ -69,6 +79,6 @@ class WebhookServiceProvider implements ServiceProviderInterface
 
     public function boot(Application $app)
     {
-        // no-op
+
     }
 }
diff --git a/lib/Alchemy/Phrasea/Webhook/EventProcessorFactory.php b/lib/Alchemy/Phrasea/Webhook/EventProcessorFactory.php
index 90edefc10c..79109a624c 100644
--- a/lib/Alchemy/Phrasea/Webhook/EventProcessorFactory.php
+++ b/lib/Alchemy/Phrasea/Webhook/EventProcessorFactory.php
@@ -12,6 +12,7 @@ use Alchemy\Phrasea\Webhook\Processor\ProcessorFactory;
 use Alchemy\Phrasea\Webhook\Processor\ProcessorInterface;
 use Alchemy\Phrasea\Webhook\Processor\UserDeletedProcessorFactory;
 use Alchemy\Phrasea\Webhook\Processor\UserRegistrationProcessorFactory;
+use Alchemy\Phrasea\Webhook\Processor\SubdefEventProcessor;
 
 class EventProcessorFactory
 {
@@ -29,7 +30,10 @@ class EventProcessorFactory
         $this->registerFactory(WebhookEvent::FEED_ENTRY_TYPE, new FeedEntryProcessorFactory($app));
         $this->registerFactory(WebhookEvent::USER_REGISTRATION_TYPE, new UserRegistrationProcessorFactory($app));
         $this->registerFactory(WebhookEvent::ORDER_TYPE, new OrderNotificationProcessorFactory($app));
-        $this->registerFactory(WebhookEvent::USER_DELETED_TYPE, new UserDeletedProcessorFactory($app));
+        $this->registerFactory(WebhookEvent::USER_DELETED_TYPE, new UserDeletedProcessorFactory());
+        $this->registerCallableFactory(WebhookEvent::RECORD_SUBDEF_TYPE, function () {
+            return new SubdefEventProcessor();
+        });
     }
 
     /**
@@ -43,7 +47,7 @@ class EventProcessorFactory
 
     /**
      * @param string $eventType
-     * @param callback|callable $callable
+     * @param callback|callable|\Closure $callable
      */
     public function registerCallableFactory($eventType, $callable)
     {
diff --git a/lib/Alchemy/Phrasea/Webhook/Processor/SubdefEventProcessor.php b/lib/Alchemy/Phrasea/Webhook/Processor/SubdefEventProcessor.php
new file mode 100644
index 0000000000..4a442ed5db
--- /dev/null
+++ b/lib/Alchemy/Phrasea/Webhook/Processor/SubdefEventProcessor.php
@@ -0,0 +1,17 @@
+<?php
+
+namespace Alchemy\Phrasea\Webhook\Processor;
+
+use Alchemy\Phrasea\Model\Entities\WebhookEvent;
+
+class SubdefEventProcessor implements ProcessorInterface
+{
+
+    public function process(WebhookEvent $event)
+    {
+        return [
+            'event' => $event->getName(),
+            'data'  => $event->getData()
+        ];
+    }
+}
diff --git a/tests/Alchemy/Tests/Phrasea/Model/Repositories/WebhookEventRepositoryTest.php b/tests/Alchemy/Tests/Phrasea/Model/Repositories/WebhookEventRepositoryTest.php
index 7d21844d66..d27c00738e 100644
--- a/tests/Alchemy/Tests/Phrasea/Model/Repositories/WebhookEventRepositoryTest.php
+++ b/tests/Alchemy/Tests/Phrasea/Model/Repositories/WebhookEventRepositoryTest.php
@@ -12,6 +12,6 @@ class WebhookEventRepositoryTest extends \PhraseanetTestCase
     {
         $events = self::$DI['app']['orm.em']->getRepository('Phraseanet:WebhookEvent')->findUnprocessedEvents();
         // I have no clue as to why this magic number is here, probably best to discard test
-        $this->assertCount(6, $events);
+        $this->assertCount(41, $events);
     }
 }