diff --git a/src/main/java/org/bdware/sc/ContractManager.java b/src/main/java/org/bdware/sc/ContractManager.java
index 5fe0161..413016e 100644
--- a/src/main/java/org/bdware/sc/ContractManager.java
+++ b/src/main/java/org/bdware/sc/ContractManager.java
@@ -1355,6 +1355,7 @@ public class ContractManager {
 
         ContractResult cr;
         long start = System.currentTimeMillis();
+        LOGGER.debug(request.getContentStr());
         if (client.contractMeta.sigRequired) {
             if (!request.verifySignature()) {
                 cr = new ContractResult(Status.Error, new JsonPrimitive("sign verified failed"));