do {

       let theJSONData = try NSJSONSerialization.dataWithJSONObject(
                        param ,
                        options: NSJSONWritingOptions(rawValue: 0))

       var theJSONText : String = String(data: theJSONData,
                        encoding: NSASCIIStringEncoding)!

       print(theJSONText)

       theJSONText = theJSONText.stringByReplacingOccurrencesOfString("\", withString: "", options: NSStringCompareOptions.LiteralSearch, range: nil)

       print(theJSONText)

       let newParam = ["ESignData":theJSONText]


} catch let error as NSError {
                    print(error)
                }

{"EntNum":"47","JobNo":"1737753","ClientID":"100","HospNo":"1","QAReason":"","DoctorNo":"1694","Action":"Sign"}
{"EntNum":"47","JobNo":"1737753","ClientID":"100","HospNo":"1","QAReason":"","DoctorNo":"1694","Action":"Sign"}

WebService.PostURL(mainLink, methodname: ESIGNTHISDOC, param: newParam, userName: AUTH_USERNAME, password: AUTH_PWD, CompletionHandler: { (success, response) in
})

Param =  {
    ESignData = "{"EntNum":"47","JobNo":"1737753","ClientID":"100","HospNo":"1","QAReason":"","DoctorNo":"1694","Action":"Sign"}";
}