diff --git a/vertexai/_genai/_evals_metric_handlers.py b/vertexai/_genai/_evals_metric_handlers.py
index 5c64488c5d..340769e6d6 100644
--- a/vertexai/_genai/_evals_metric_handlers.py
+++ b/vertexai/_genai/_evals_metric_handlers.py
@@ -1213,6 +1213,7 @@ def _build_request_payload(
             reference=reference_instance_data,
             agent_data=PredefinedMetricHandler._eval_case_to_agent_data(eval_case),
         )
+        print("instance_payload: ", instance_payload)
 
         return {
             "instance": instance_payload,