diff --git a/model_data/simulation_system/handlers/predictions_app.py b/model_data/simulation_system/handlers/predictions_app.py
index 1c77897f..c12c3f61 100644
--- a/model_data/simulation_system/handlers/predictions_app.py
+++ b/model_data/simulation_system/handlers/predictions_app.py
@@ -1,3 +1,4 @@
+import json
 import os
 import logging
 
@@ -19,7 +20,7 @@ def handler(event, context):
     # Assuming a file in a bucket landing for now?
     # Assuming we have a model to use
 
-    body = event["body"]
+    body = json.loads(event["body"])
 
     data_path = body["file_location"]
     property_id = body["property_id"]