diff --git a/eva_sub_cli/call_home.py b/eva_sub_cli/call_home.py
index b4ab60c..fd0d2cf 100644
--- a/eva_sub_cli/call_home.py
+++ b/eva_sub_cli/call_home.py
@@ -99,7 +99,7 @@ def _send_event(self, event_type, **kwargs):
     def send_start(self):
         self._send_event(EVENT_START)
 
-    def send_validation_completed(self, validation_result):
+    def send_validation_completed(self, validation_result: dict):
         self._send_event(EVENT_VALIDATION_COMPLETED, validation_result=validation_result)
 
     def send_end(self):
diff --git a/tests/test_call_home.py b/tests/test_call_home.py
index cb1801b..f41a933 100644
--- a/tests/test_call_home.py
+++ b/tests/test_call_home.py
@@ -1,3 +1,4 @@
+import json
 import os
 import shutil
 import time
@@ -5,12 +6,15 @@
 from unittest import TestCase
 from unittest.mock import patch
 
+import jsonschema
+
 from ebi_eva_common_pyutils.config import Configuration, WritableConfig
 from requests.exceptions import ConnectionError, Timeout
 
 from eva_sub_cli import SUB_CLI_CONFIG_FILE, ROOT_DIR
 from eva_sub_cli.call_home import _get_or_create_deployment_id, _get_or_create_run_id, \
     CallHomeClient, EVENT_START, EVENT_FAILURE, EVENT_END
+from tests.test_report import common_validation_results
 
 
 class TestDeploymentId(TestCase):
@@ -163,12 +167,22 @@ def test_generic_exception_swallowed(self, mock_post):
 
     @patch('eva_sub_cli.call_home.requests.post')
     def test_send_all_event_types(self, mock_post):
+        schema_path = os.path.join(os.path.dirname(os.path.abspath(__file__)),
+                                   '..', 'eva_sub_cli', 'etc', 'call_home_payload_schema.json')
+        with open(schema_path) as f:
+            schema = json.load(f)
+
         client = self._create_client()
         client.send_start()
-        client.send_validation_completed('PASS')
+        client.send_validation_completed(common_validation_results)
         client.send_end()
         self.assertEqual(mock_post.call_count, 3)
 
+        for call in mock_post.call_args_list:
+            payload = call.kwargs['json']
+            jsonschema.validate(instance=payload, schema=schema)
+
+
     @patch('eva_sub_cli.call_home.requests.post')
     def test_send_failure_event(self, mock_post):
         client = self._create_client()