diff --git a/src/main/java/dlt/client/tangle/hornet/model/LedgerWriter.java b/src/main/java/dlt/client/tangle/hornet/model/LedgerWriter.java
index e850aa5..bd9598e 100644
--- a/src/main/java/dlt/client/tangle/hornet/model/LedgerWriter.java
+++ b/src/main/java/dlt/client/tangle/hornet/model/LedgerWriter.java
@@ -123,7 +123,7 @@ public void createMessage(String index, String data) {
             connection.setDoOutput(true);
 
             String requestBody = String.format(
-                    "{\"index\": \"%s\",\"payload\": %s}",
+                    "{\"index\": \"%s\",\"data\": %s}",
                     index,
                     data
             );