WSO2 ESB 无法将完整的 JSON 数据转换为 XML

I am constructing a POC. And I created a pass through proxy service for Google Plus. Without using any proxy service I get this is my output :

 {
   "kind":"plus#person",
   "etag":""ExituU7aUpmkkfyD52VulzptThw/4J1clegrhxYC2fsJOu2XWCs1Ewg"",
   "id":"117488614303967062311",
   "displayName":"Abhi NeoN",
   "name":{
      "familyName":"NeoN",
      "givenName":"Abhi"
   },
   "tagline":"hey guys ! ssup!! check out ma recnt videos... uploaded",
   "gender":"male",
   "aboutMe":"u003cbu003ehie, abhishek - ma full name u003c/bu003eu003cdivu003eu003cbu003em a DANCER ,u003c/bu003eu003c/divu003eu003cdivu003eu003cbu003ei luv ma dancing .u003c/bu003eu003c/divu003eu003cdivu003eu003cbu003ei care ma dancing ,u003c/bu003eu003c/divu003eu003cdivu003eu003cbu003ei jus hv a gr8 thng in me dats ma dancing.u003c/bu003eu003c/divu003e",
   "relationshipStatus":"single",
   "url":"https://plus.google.com/117488614303967062311",
   "image":{
      "url":"https://lh6.googleusercontent.com/-tF-ip0tUxD4/AAAAAAAAAAI/AAAAAAAAAAA/WKI3USUh_DA/photo.jpg?sz=50"
   },
   "urls":[
      {
         "value":"https://plus.google.com/117488614303967062311",
         "type":"profile"
      },
      {
         "value":"https://www.googleapis.com/plus/v1/people/117488614303967062311",
         "type":"json"
      }
   ],
   "organizations":[
      {
         "name":"our lady of nazareth high school",
         "title":"science",
         "type":"school"
      },
      {
         "name":"",
         "title":"BLUEBYTES",
         "type":"work"
      }
   ]
}

但是当我尝试使用简单的直通服务来做同样的事情时，我只得到:

{
   "kind":"plus#person"
}