public KnetikApiResponse PutUserInfo(string name, string value, Action<KnetikApiResponse> cb = null)
{
JSONObject j = new JSONObject (JSONObject.Type.OBJECT);
j.AddField ("configName", name);
j.AddField ("configValue", value);
String body = j.Print ();
KnetikRequest req = CreateRequest(PutUserInfoEndpoint, body);
KnetikApiResponse res = new KnetikApiResponse(this, req, cb);
return res;
}