I'm using WCF RESTfull service which responds in JSON format, but by default WCF service sends not pretty formatted JSON messages (i mean json object without tabulation). 

By default WCF sends JSON like that:

```
{"ResponseBody":{"Code":"0011","InvocationTime":278,"Message":""},"ResponseInformation":{"ServiceCode":0,"ServiceMessage":"Successfull","ServiceInvocationTime":0}}

```

But i need this:

```
{
"ResponseBody": {
    "Code": "0011",
    "InvocationTime": 278,
    "Message": ""
},
"ResponseInformation": {
    "ServiceCode": 0,
    "ServiceMessage": "Successfull",
    "ServiceInvocationTime": 0
}

```

Does anybody knows solution of this simple problem? Thanks!