Previous value: -nullNew value: +{
+  "properties": {
+    "template": {
+      "properties": {
+        "alias": {
+          "type": [
+            "string",
+            "null"
+          ]
+        },
+        "category": {
+          "description": "transactional, product, or newsletter",
+          "type": "string"
+        },
+        "created_at": {
+          "description": "ISO 8601",
+          "type": "string"
+        },
+        "design": {
+          "description": "Block design, for blocks templates",
+          "type": [
+            "object",
+            "null"
+          ]
+        },
+        "format": {
+          "description": "html or blocks",
+          "type": "string"
+        },
+        "html": {
+          "type": [
+            "string",
+            "null"
+          ]
+        },
+        "id": {
+          "description": "Template id",
+          "type": "string"
+        },
+        "name": {
+          "type": "string"
+        },
+        "preheader": {
+          "type": [
+            "string",
+            "null"
+          ]
+        },
+        "published_at": {
+          "description": "ISO 8601",
+          "type": [
+            "string",
+            "null"
+          ]
+        },
+        "published_version_id": {
+          "type": [
+            "string",
+            "null"
+          ]
+        },
+        "status": {
+          "description": "draft or published",
+          "type": "string"
+        },
+        "subject": {
+          "description": "Default subject; empty for a layout-only template",
+          "type": "string"
+        },
+        "text": {
+          "type": [
+            "string",
+            "null"
+          ]
+        },
+        "unsubscribe_enabled": {
+          "type": "boolean"
+        },
+        "updated_at": {
+          "description": "ISO 8601",
+          "type": "string"
+        },
+        "variables": {
+          "items": {
+            "type": "string"
+          },
+          "type": [
+            "array",
+            "null"
+          ]
+        },
+        "warnings": {
+          "description": "Content problems found in the template",
+          "items": {
+            "properties": {
+              "code": {
+                "type": "string"
+              },
+              "detail": {
+                "type": "string"
+              },
+              "message": {
+                "type": "string"
+              }
+            },
+            "type": "object"
+          },
+          "type": "array"
+        }
+      },
+      "required": [
+        "id"
+      ],
+      "type": "object"
+    }
+  },
+  "required": [
+    "template"
+  ],
+  "type": "object"
+}