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diff --git a/o2common/views/flask_restx_fields.py b/o2common/views/flask_restx_fields.py
new file mode 100644
index 0000000..0337239
--- /dev/null
+++ b/o2common/views/flask_restx_fields.py
@@ -0,0 +1,35 @@
+# Copyright (C) 2022 Wind River Systems, Inc.
+#
+#  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.
+
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from flask_restx import fields
+import json
+
+from o2common.helper import o2logging
+logger = o2logging.get_logger(__name__)
+
+
+class Json2Dict(fields.Raw):
+
+    def format(self, value):
+        value2 = None
+        try:
+            value2 = json.loads(value) if value else None
+        except Exception as ex:
+            logger.warning(
+                f"Failed to loads json string: {value}, exception: {str(ex)}")
+            value2 = value
+        return value2