diff --git a/application/Espo/Core/Api/RequestWrapper.php b/application/Espo/Core/Api/RequestWrapper.php
index 2997c3bc38..9952bccbe7 100644
--- a/application/Espo/Core/Api/RequestWrapper.php
+++ b/application/Espo/Core/Api/RequestWrapper.php
@@ -202,14 +202,20 @@ class RequestWrapper implements ApiRequest
         $contents = $this->getBodyContents();
 
         if ($this->getContentType() === 'application/json' && $contents) {
-            $this->parsedBody = Json::decode($contents);
+            $parsedBody = Json::decode($contents);
 
-            if (is_array($this->parsedBody)) {
-                $this->parsedBody = (object) [
-                    'list' => $this->parsedBody,
+            if (is_array($parsedBody)) {
+                $parsedBody = (object) [
+                    'list' => $parsedBody,
                 ];
             }
 
+            if (!$parsedBody instanceof stdClass) {
+                throw new Error("Body is not a JSON object.");
+            }
+
+            $this->parsedBody = $parsedBody;
+
             return;
         }