WSO2-ESB JSON response format

My back-end service responses with XML, and I return it as is by default. I need to convert a response to JSON inside the "outSequence" if a client give me an additions argument (like: &outout_format=json). For example: ``` <result> <foo>bar</foo> <foo2>bar2</foo2> <nested> <node>value</node> </nested> </result> ``` should be responded as ``` { "foo": "bar", "foo2": "bar2", "nested":{ "node":"value" } } ``` Here is a test proxy-service (I just use here inSequence to show the problem): ``` <?xml version="1.0" encoding="UTF-8"?> <proxy xmlns="http://ws.apache.org/ns/synapse" name="JSONtest" transports="https,http" statistics="disable" trace="disable" startOnLoad="true"> <target> <inSequence> <property name="TEST_WAITING_FOR" value="json" scope="default" type="STRING"/> <header name="To" action="remove"/> <property name="RESPONSE" value="true"/> <property name="NO_ENTITY_BODY" scope="axis2" action="remove"/> <payloadFactory media-type="xml"> <format> <response xmlns=""> <result>success</result> <code>123</code> </response> </format> <args/> </payloadFactory> <switch source="get-property('TEST_WAITING_FOR')"> <case regex="json"> <property name="messageType" value="application/json" scope="axis2" type="STRING"/> </case> <default> <property name="messageType" value="text/xml" scope="axis2" type="STRING"/> </default> </switch> <send/> </inSequence> </target> <description/> ``` It responses: ``` {"response":{"result":"success","code":123}} ``` Is there any way to remove the root-node "response" to make it look like this? ``` {"result":"success","code":123} ``` When I try to remove a node "result" with Enrich-mediator (ex. $body/result/* -> $body/*) it becomes an invalid XML with several root-nodes, and JSON contains only the first one. I know that it's possible to Payload a JSON message, but backend can return an XML with different formats and various number of nested nodes so I cannot hardcode it as a JSON. It seems that i need to implement my own JSONMessageFromatter? (any example of code?) UPD: I found the solution (thanks to Dakshika) ``` <payloadFactory media-type="json"> <format>$1</format> <args> <arg expression="$.response" evaluator="json"></arg> </args> </payloadFactory> ```