diff --git a/client/src/graphql/gql/sandbox/mutations/mutateContentBlock.gql b/client/src/graphql/gql/sandbox/mutations/mutateContentBlock.gql
index c688a606..ec9e426a 100644
--- a/client/src/graphql/gql/sandbox/mutations/mutateContentBlock.gql
+++ b/client/src/graphql/gql/sandbox/mutations/mutateContentBlock.gql
@@ -20,3 +20,13 @@ mutation MutateContentBlock($input: MutateContentBlockInput!) {
     "title": "Hallo Daniel"
   }
 }
+
+
+{
+  "input": {
+    "id": "Q29udGVudEJsb2NrTm9kZToyMQ==",
+    "type": "plain",
+    "title": "Hallo Daniel",
+    "contents": "[{\"type\":\"text_block\",\"value\":{\"text\": \"<p>Beatae odio</p>\"}}]"
+  }
+}