diff --git a/web/gui/src/main/webapp/json/eventTest_15.json b/web/gui/src/main/webapp/json/eventTest_15.json
new file mode 100644
index 0000000..3622122
--- /dev/null
+++ b/web/gui/src/main/webapp/json/eventTest_15.json
@@ -0,0 +1,17 @@
+{
+  "event": "addDevice",
+  "payload": {
+    "id": "of:0000ffffffffff0A",
+    "type": "roadm",
+    "online": false,
+    "labels": [
+      "0000ffffffffff0A",
+      "FF:FF:FF:FF:FF:0A",
+      "?"
+    ],
+    "metaUi": {
+      "x": 840,
+      "y": 290
+    }
+  }
+}