diff --git a/fixtures/initial_data.json b/fixtures/initial_data.json
index 987be7622..2f1c5d7ad 100644
--- a/fixtures/initial_data.json
+++ b/fixtures/initial_data.json
@@ -90,16 +90,7 @@
         "pk": 1,
         "fields": {
             "external_key": "tenant-x-key",
-            "lms_configs": {
-                "EDNX_USE_SIGNAL": true,
-                "PLATFORM_NAME": "Tenant X",
-                "SITE_NAME": "tenant-x.local.edly.io",
-                "course_org_filter": [
-                    "TenantX",
-                    "OpenedX",
-                    "edX"
-                ]
-            },
+            "lms_configs": "{\n    \"EDNX_USE_SIGNAL\": true,\n    \"PLATFORM_NAME\": \"Tenant X\",\n    \"SITE_NAME\": \"tenant-x.local.edly.io\",\n    \"course_org_filter\": [\n        \"TenantX\",\n        \"OpenedX\",\n        \"edx\"\n    ]\n}",
             "studio_configs": {},
             "theming_configs": {},
             "meta": {},
@@ -113,14 +104,7 @@
         "pk": 2,
         "fields": {
             "external_key": "tenant-y-key",
-            "lms_configs": {
-                "EDNX_USE_SIGNAL": true,
-                "PLATFORM_NAME": "Tenant Y",
-                "SITE_NAME": "tenant-y.local.edly.io",
-                "course_org_filter": [
-                    "TenantY"
-                ]
-            },
+            "lms_configs": "{\n    \"EDNX_USE_SIGNAL\": true,\n    \"PLATFORM_NAME\": \"Tenant Y\",\n    \"SITE_NAME\": \"tenant-y.local.edly.io\",\n    \"course_org_filter\": [\n        \"TenantY\"\n    ]\n}",
             "studio_configs": {},
             "theming_configs": {},
             "meta": {},