Becoming authenticated user in drupal service api with ionic

I am creating an app with using ionic and drupal web service. I could not be an authenticated user. I am using this code fragment to getting login data:

requestConfig = {
                method :'POST',
                url : pathToLogin,
                 headers: {
                    //@TODO use the format of drupalApiConfig
                    "Accept"        : "application/json",
                    "Content-Type"  : "application/json",
                 },
                 data : {
                        "username" : username,
                        "password" : password
                },
                withCredentials: false,
        }

After getting login data then I am parsing them and getting data like this:

sessid: "FPbXbDLtei0jRVu6PzGUfgqAuAhd8XrOK2G24RnWreM", 
session_name: "SESS3d0229a2305c5756586d8cb91ca04346", 
token: "lEZ01gggrGQoQ_kAlzsvY0QzRGs11t2VHKRQg_dThjE", 
user: Object

I am using this token with other get operations just like this:

requestConfig = {
        method :'GET',
        url : indexPath,
        withCredentials: false,
        headers : {
            X_CSRF_TOKEN : token
        }
    },

However I am getting this error:

GET http://www.exampleDomain.com/api/mobiledata/user?page=1&pageSize=10 403 (: Access denied for user anonymous)

Could anyone explain this problem and its solution?