ISSUE-345: make it more specific

Author: tatevikg1

src/Statistics/Controller/AnalyticsController.php

@@ -106,7 +106,10 @@ public function getCampaignStatistics(Request $request): JsonResponse
         $lastId = (int) $request->query->get('after_id', 0);
 
         $data = $this->analyticsService->getCampaignStatistics($limit, $lastId);
-        $normalizedData = $this->campaignStatisticsNormalizer->normalize($data, null, ['limit' => $limit]);
+        $normalizedData = $this->campaignStatisticsNormalizer->normalize($data, null, [
+            'limit' => $limit,
+            'campaign_statistics' => true,
+        ]);
 
         return $this->json($normalizedData, Response::HTTP_OK);
     }

src/Statistics/Serializer/CampaignStatisticsNormalizer.php

@@ -58,6 +58,6 @@ public function normalize(mixed $object, string $format = null, array $context =
      */
     public function supportsNormalization(mixed $data, string $format = null, array $context = []): bool
     {
-        return is_array($data) && isset($data['campaigns']);
+        return is_array($data) && isset($data['campaign_statistics']);
     }
 }