diff --git a/application/src/Entity/AbstractEntity.php b/application/src/Entity/AbstractEntity.php
index 9590092..dec8020 100644
--- a/application/src/Entity/AbstractEntity.php
+++ b/application/src/Entity/AbstractEntity.php
@@ -32,4 +32,9 @@ abstract class AbstractEntity implements EntityInterface
     public function __construct()
     {
     }
+
+    public function __toString(): string
+    {
+        return __CLASS__.':'.spl_object_hash($this);
+    }
 }