diff --git a/config/stacks/metadataManager.ts b/config/stacks/metadataManager.ts
index 360460186..6a75a0f7f 100644
--- a/config/stacks/metadataManager.ts
+++ b/config/stacks/metadataManager.ts
@@ -5,7 +5,7 @@ import {
   corsAllowOrigins,
   logsApiGatewayConfig,
   vpcProps,
-  eventBusName
+  eventBusName,
 } from '../constants';
 import { MetadataManagerStackProps } from '../../lib/workload/stateless/stacks/metadata-manager/deploy/stack';
 
diff --git a/lib/workload/stateless/stacks/metadata-manager/Makefile b/lib/workload/stateless/stacks/metadata-manager/Makefile
index e74d81833..10cb5fa4b 100644
--- a/lib/workload/stateless/stacks/metadata-manager/Makefile
+++ b/lib/workload/stateless/stacks/metadata-manager/Makefile
@@ -76,7 +76,7 @@ insert-data:
 	@python manage.py insert_mock_data
 
 suite:
-	@python manage.py test
+	@python manage.py test --parallel
 
 # full mock suite test pipeline - install deps, bring up compose stack, run suite, bring down compose stack
 test: install up suite down
diff --git a/lib/workload/stateless/stacks/metadata-manager/proc/tests/test_tracking_sheet_srv.py b/lib/workload/stateless/stacks/metadata-manager/proc/tests/test_tracking_sheet_srv.py
index 6510e598e..a3ea9129f 100644
--- a/lib/workload/stateless/stacks/metadata-manager/proc/tests/test_tracking_sheet_srv.py
+++ b/lib/workload/stateless/stacks/metadata-manager/proc/tests/test_tracking_sheet_srv.py
@@ -1,12 +1,12 @@
 import os
-from unittest.mock import MagicMock
-from typing import List
-
+import json
 import pandas as pd
 from libumccr.aws import libeb
+
+from unittest.mock import MagicMock
 from django.test import TestCase
-from app.models import Library, Sample, Subject, Project, Contact, Individual
 
+from app.models import Library, Sample, Subject, Project, Contact, Individual
 from proc.service.tracking_sheet_srv import sanitize_lab_metadata_df, persist_lab_metadata
 from .utils import check_put_event_entries_format, check_put_event_value, is_expected_event_in_output
 
@@ -347,7 +347,7 @@ def test_eb_put_event(self) -> None:
                                   )
         for event in expected_created_detail:
             self.assertTrue(
-                is_expected_event_in_output(self, expected=event, output=[i.get('Detail') for i in arg]))
+                is_expected_event_in_output(self, expected=event, output=[json.loads(i.get('Detail')) for i in arg]))
 
         """
         Test if record are UPDATE and event entries are correct
@@ -378,7 +378,8 @@ def test_eb_put_event(self) -> None:
                                   event_bus_name=TEST_EVENT_BUS_NAME
                                   )
         for event in expected_update_detail:
-            self.assertTrue(is_expected_event_in_output(self, expected=event, output=[i.get('Detail') for i in arg]))
+            self.assertTrue(
+                is_expected_event_in_output(self, expected=event, output=[json.loads(i.get('Detail')) for i in arg]))
 
         """
         Test if the record are DELETE and event entries are correct
@@ -405,5 +406,5 @@ def test_eb_put_event(self) -> None:
                                   event_bus_name=TEST_EVENT_BUS_NAME
                                   )
         for event in expected_delete_detail:
-            self.assertTrue(is_expected_event_in_output(self, expected=event, output=[i.get('Detail') for i in arg]))
-
+            self.assertTrue(
+                is_expected_event_in_output(self, expected=event, output=[json.loads(i.get('Detail')) for i in arg]))