diff --git a/CHANGELOG.md b/CHANGELOG.md
index 786d524..151fe41 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,7 @@
 - New #97: Add HTTP cookie authentication method (@IbragimovDiyorbek)
 - Chg #95, #99: Change PHP constraint in `composer.json` to `8.0 - 8.4` (@vjik)
 - Bug #99: Explicitly mark nullable parameters (@vjik)
+- Eng #100: Adapt summary data in debug collector (@rustamwin)
 
 ## 3.1.1 May 06, 2024
 
diff --git a/src/Debug/IdentityCollector.php b/src/Debug/IdentityCollector.php
index 5b48537..0e65133 100644
--- a/src/Debug/IdentityCollector.php
+++ b/src/Debug/IdentityCollector.php
@@ -50,10 +50,8 @@ public function getSummary(): array
         }
         $lastIdentity = end($this->identities);
         return [
-            'identity' => [
-                'lastId' => is_array($lastIdentity) ? $lastIdentity['id'] : null,
-                'total' => count($this->identities),
-            ],
+            'lastId' => is_array($lastIdentity) ? $lastIdentity['id'] : null,
+            'total' => count($this->identities),
         ];
     }
 }
diff --git a/tests/Debug/UserCollectorTest.php b/tests/Debug/UserCollectorTest.php
index 5929b76..e99e8c6 100644
--- a/tests/Debug/UserCollectorTest.php
+++ b/tests/Debug/UserCollectorTest.php
@@ -44,9 +44,8 @@ protected function checkSummaryData(array $data): void
     {
         parent::checkSummaryData($data);
 
-        $this->assertArrayHasKey('identity', $data);
-        $this->assertArrayHasKey('lastId', $data['identity']);
-        $this->assertEquals('stub2', $data['identity']['lastId']);
-        $this->assertEquals(2, $data['identity']['total']);
+        $this->assertArrayHasKey('lastId', $data);
+        $this->assertEquals('stub2', $data['lastId']);
+        $this->assertEquals(2, $data['total']);
     }
 }