Fix flakiness in JSON test

Author: Ben Creech

google-cloud-logging/src/test/java/com/google/cloud/logging/LogEntryTest.java

@@ -25,6 +25,7 @@
 import com.google.cloud.logging.Payload.ProtoPayload;
 import com.google.cloud.logging.Payload.StringPayload;
 import com.google.common.collect.ImmutableMap;
+import com.google.gson.JsonParser;
 import com.google.protobuf.Any;
 import com.google.protobuf.Empty;
 import java.time.Instant;
@@ -377,7 +378,10 @@ private void compareLogEntry(LogEntry expected, LogEntry value, Boolean extraVal
   public void testStructureLogPresentations() {
     for (int i = 0; i < TEST_LOG_ENTRIES.length; i++) {
       String structured_log = TEST_LOG_ENTRIES[i].toStructuredJsonString();
-      assertEquals(EXPECTED_STRUCTURED_LOGS[i], structured_log);
+
+      assertEquals(
+          JsonParser.parseString(EXPECTED_STRUCTURED_LOGS[i]),
+          JsonParser.parseString(structured_log));
     }
   }