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diff --git a/otf-service-api/src/main/java/org/oran/otf/common/utility/gson/GsonUtils.java b/otf-service-api/src/main/java/org/oran/otf/common/utility/gson/GsonUtils.java
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+++ b/otf-service-api/src/main/java/org/oran/otf/common/utility/gson/GsonUtils.java
@@ -0,0 +1,69 @@
+/*  Copyright (c) 2019 AT&T Intellectual Property.                             #
+#                                                                              #
+#   Licensed under the Apache License, Version 2.0 (the "License");            #
+#   you may not use this file except in compliance with the License.           #
+#   You may obtain a copy of the License at                                    #
+#                                                                              #
+#       http://www.apache.org/licenses/LICENSE-2.0                             #
+#                                                                              #
+#   Unless required by applicable law or agreed to in writing, software        #
+#   distributed under the License is distributed on an "AS IS" BASIS,          #
+#   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.   #
+#   See the License for the specific language governing permissions and        #
+#   limitations under the License.                                             #
+##############################################################################*/
+
+
+package org.oran.otf.common.utility.gson;
+
+import com.google.gson.Gson;
+import com.google.gson.GsonBuilder;
+import com.google.gson.JsonDeserializationContext;
+import com.google.gson.JsonDeserializer;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonParseException;
+import com.google.gson.JsonPrimitive;
+import com.google.gson.JsonSerializationContext;
+import com.google.gson.JsonSerializer;
+import com.google.gson.reflect.TypeToken;
+import java.lang.reflect.Type;
+import java.util.HashMap;
+import java.util.Map;
+import org.bson.types.ObjectId;
+
+public class GsonUtils {
+    private static final GsonBuilder gsonBuilder =
+            new GsonBuilder().setDateFormat("yyyy-MM-dd'T'HH:mm:ssZ")
+                    .registerTypeAdapter(ObjectId.class, new JsonSerializer<ObjectId>() {
+                        @Override
+                        public JsonElement serialize(ObjectId src, Type typeOfSrc,
+                                                     JsonSerializationContext context) {
+                            return new JsonPrimitive(src.toHexString());
+                        }
+                    }).registerTypeAdapter(ObjectId.class, new JsonDeserializer<ObjectId>() {
+                @Override
+                public ObjectId deserialize(JsonElement json, Type typeOfT,
+                                            JsonDeserializationContext context) throws JsonParseException {
+                    return new ObjectId(json.getAsString());
+                }
+            });
+
+    public static Gson getGson() {
+        return gsonBuilder.create();
+    }
+
+    private static final Gson gson = getGson();
+    private static final Type TT_mapStringString = new TypeToken<Map<String,String>>(){}.getType();
+
+    public static Map<String, String> jsonToMapStringString(String json) {
+        Map<String, String> ret = new HashMap<String, String>();
+        if (json == null || json.isEmpty())
+            return ret;
+        return gson.fromJson(json, TT_mapStringString);
+    }
+    public static String mapStringObjectToJson(Map<String, Object> map) {
+        if (map == null)
+            map = new HashMap<String, Object>();
+        return gson.toJson(map);
+    }
+}
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