diff --git a/functions/v2/index.js b/functions/v2/index.js
index ddebfc371a..ba4ee5c8b9 100644
--- a/functions/v2/index.js
+++ b/functions/v2/index.js
@@ -64,25 +64,20 @@ exports.helloGCS = cloudevent => {
  */
 exports.helloAuditLog = cloudevent => {
   // Print out details from the CloudEvent itself
-  console.log('API method:', cloudevent.methodname);
   console.log('Event type:', cloudevent.type);
+
+  // Print out the CloudEvent's `subject` property
+  // See https://github.com/cloudevents/spec/blob/v1.0.1/spec.md#subject
   console.log('Subject:', cloudevent.subject);
 
-  // Print out details from the Cloud Audit Logging entry
+  // Print out details from the `protoPayload`
+  // This field encapsulates a Cloud Audit Logging entry
+  // See https://cloud.google.com/logging/docs/audit#audit_log_entry_structure
   const payload = cloudevent.data && cloudevent.data.protoPayload;
   if (payload) {
+    console.log('API method:', payload.methodName);
     console.log('Resource name:', payload.resourceName);
-  }
-
-  const request = payload.request;
-  if (request) {
-    console.log('Request type:', request['@type']);
-  }
-
-  const metadata = payload && payload.requestMetadata;
-  if (metadata) {
-    console.log('Caller IP:', metadata.callerIp);
-    console.log('User agent:', metadata.callerSuppliedUserAgent);
+    console.log('Principal:', payload.authenticationInfo.principalEmail);
   }
 };
 // [END functions_log_cloudevent]
diff --git a/functions/v2/test/index.test.js b/functions/v2/test/index.test.js
index 312ec4100b..f97c459871 100644
--- a/functions/v2/test/index.test.js
+++ b/functions/v2/test/index.test.js
@@ -145,18 +145,14 @@ describe('functions_log_cloudevent', () => {
 
   it('should process a CloudEvent', async () => {
     const event = {
-      methodname: 'storage.objects.write',
       type: 'google.cloud.audit.log.v1.written',
       subject:
         'storage.googleapis.com/projects/_/buckets/my-bucket/objects/test.txt',
       data: {
         protoPayload: {
-          requestMetadata: {
-            callerIp: '8.8.8.8',
-            callerSuppliedUserAgent: 'example-user-agent',
-          },
-          request: {
-            '@type': 'type.googleapis.com/storage.objects.write',
+          methodName: 'storage.objects.write',
+          authenticationInfo: {
+            principalEmail: 'example@example.com',
           },
           resourceName: 'some-resource',
         },
@@ -175,12 +171,7 @@ describe('functions_log_cloudevent', () => {
       /Subject: storage.googleapis.com\/projects\/_\/buckets\/my-bucket\/objects\/test\.txt/
     );
     assert.match(output, /Resource name: some-resource/);
-    assert.match(
-      output,
-      /Request type: type\.googleapis\.com\/storage\.objects.write/
-    );
-    assert.match(output, /Caller IP: 8\.8\.8\.8/);
-    assert.match(output, /User agent: example-user-agent/);
+    assert.match(output, /Principal: example@example\.com/);
   });
 });