diff --git a/src/Resources/config/services.yaml b/src/Resources/config/services.yaml
index 5ca6a64..3253fae 100644
--- a/src/Resources/config/services.yaml
+++ b/src/Resources/config/services.yaml
@@ -1,5 +1,18 @@
 services:
+  _defaults:
+    autoconfigure: true
+    public: false
+    autowire: true
+
   Rinsvent\RequestBundle\EventListener\RequestListener:
     autowire: true
     tags:
-      - { name: kernel.event_listener, event: kernel.request}
+      - { name: kernel.event_listener, event: kernel.request }
+
+  Rinsvent\RequestBundle\Service\Transformer\ServiceResolver:
+    bind:
+      $transformerLocator: !tagged_locator { tag: 'rinsvent.transformer', index_by: 'key', default_index_method: 'getLocatorKey' }
+
+  _instanceof:
+    Rinsvent\RequestBundle\Service\Transformer\AbstractTransformer:
+      tags: [ 'rinsvent.transformer' ]
diff --git a/src/Service/Transformer/AbstractTransformer.php b/src/Service/Transformer/AbstractTransformer.php
new file mode 100644
index 0000000..f1df86b
--- /dev/null
+++ b/src/Service/Transformer/AbstractTransformer.php
@@ -0,0 +1,13 @@
+<?php
+
+namespace Rinsvent\RequestBundle\Service\Transformer;
+
+use Rinsvent\Data2DTO\Transformer\TransformerInterface;
+
+abstract class AbstractTransformer implements TransformerInterface
+{
+    public static function getLocatorKey()
+    {
+        return static::class;
+    }
+}
diff --git a/src/Service/Transformer/Entity.php b/src/Service/Transformer/Entity.php
new file mode 100644
index 0000000..b36d8d8
--- /dev/null
+++ b/src/Service/Transformer/Entity.php
@@ -0,0 +1,15 @@
+<?php
+
+namespace Rinsvent\RequestBundle\Service\Transformer;
+
+use Rinsvent\Data2DTO\Transformer\Meta;
+
+#[\Attribute]
+class Entity extends Meta
+{
+    public const TYPE = 'service';
+
+    public function __construct(
+        public string $class
+    ) {}
+}
diff --git a/src/Service/Transformer/EntityTransformer.php b/src/Service/Transformer/EntityTransformer.php
new file mode 100644
index 0000000..f2e1e0d
--- /dev/null
+++ b/src/Service/Transformer/EntityTransformer.php
@@ -0,0 +1,26 @@
+<?php
+
+namespace Rinsvent\RequestBundle\Service\Transformer;
+
+use Doctrine\ORM\EntityManagerInterface;
+use Rinsvent\Data2DTO\Transformer\Meta;
+
+class EntityTransformer extends AbstractTransformer
+{
+    public function __construct(
+        protected EntityManagerInterface $em
+    ) {}
+
+    /**
+     * @param $data
+     * @param Entity $meta
+     */
+    public function transform(&$data, Meta $meta): void
+    {
+        if (!is_int($data)) {
+            return;
+        }
+        $repository = $this->em->getRepository($meta->class);
+        $data = $repository->find((int)$data);
+    }
+}
diff --git a/src/Service/Transformer/ServiceResolver.php b/src/Service/Transformer/ServiceResolver.php
new file mode 100644
index 0000000..ca906a4
--- /dev/null
+++ b/src/Service/Transformer/ServiceResolver.php
@@ -0,0 +1,21 @@
+<?php
+
+namespace Rinsvent\RequestBundle\Service\Transformer;
+
+use Rinsvent\Data2DTO\Resolver\TransformerResolverInterface;
+use Rinsvent\Data2DTO\Transformer\Meta;
+use Rinsvent\Data2DTO\Transformer\TransformerInterface;
+use Symfony\Component\DependencyInjection\ServiceLocator;
+
+class ServiceResolver implements TransformerResolverInterface
+{
+    public function __construct(
+        private ServiceLocator $transformerLocator
+    ) {}
+
+    public function resolve(Meta $meta): TransformerInterface
+    {
+        $transformerClass = $meta::class . 'Transformer';
+        return $this->transformerLocator->get($transformerClass);
+    }
+}
\ No newline at end of file