public TokenIdentity Post(
        SocialNetwork socialNetwork,
        string socialUserID,
        [FromUri] string socialAuthToken,
        [FromUri] string deviceRegistrationID = null,
        [FromUri] DeviceType?deviceType       = null)
    {
        var socialManager = new SocialManager();

        var user = socialManager.GetSocialUser(socialNetwork, socialUserID, socialAuthToken);

        var tokenIdentity = new AuthCacheManager()
                            .Authenticate(
            user,
            deviceType,
            deviceRegistrationID);

        return(tokenIdentity);
    }