diff --git a/api/src/main/resources/schema/events/eventref.json b/api/src/main/resources/schema/events/eventref.json
index 76334993..c0e04a7a 100644
--- a/api/src/main/resources/schema/events/eventref.json
+++ b/api/src/main/resources/schema/events/eventref.json
@@ -16,7 +16,8 @@
       "description": "Maximum amount of time (ISO 8601 format) to wait for the result event. If not defined it should default to the actionExecutionTimeout"
     },
     "data": {
-      "type": "string",
+      "type": "object",
+      "existingJavaType": "com.fasterxml.jackson.databind.JsonNode",
       "description": "Expression which selects parts of the states data output to become the data of the produced event."
     },
     "contextAttributes": {
diff --git a/api/src/main/resources/schema/produce/produceevent.json b/api/src/main/resources/schema/produce/produceevent.json
index f094824e..37c3a7bb 100644
--- a/api/src/main/resources/schema/produce/produceevent.json
+++ b/api/src/main/resources/schema/produce/produceevent.json
@@ -8,7 +8,8 @@
       "minLength": 1
     },
     "data": {
-      "type": "string",
+      "type": "object",
+      "existingJavaType": "com.fasterxml.jackson.databind.JsonNode",
       "description": "Workflow expression which selects parts of the states data output to become the data of the produced event"
     },
     "contextAttributes": {
@@ -20,4 +21,4 @@
   "required": [
     "eventRef"
   ]
-}
\ No newline at end of file
+}