public partial class Startup
{
    public void Configuration(IAppBuilder app)
    {
        app.UseCors(Microsoft.Owin.Cors.CorsOptions.AllowAll);

        HttpConfiguration config = new HttpConfiguration();

        ConfigureAuth(app);
        ConfigAutoMapper();

        WebApiConfig.Register(config);
        app.UseWebApi(config);
    }
}

public SetToken(eMail : string, password : string) : BehaviorSubject<string>{
        let data = `grant_type=password&username=${eMail}&password=${password}`;
        axios.post('http://localhost:12685/token', data , { headers: { 'Content-Type' : 'application/x-www-form-urlencoded'} })
            .then(response => {
                this.token = response.data.access_token;
                this.$token.next(this.token);

                let item = {
                    'eMail' : eMail,
                    'token' : this.token
                }

                localStorage.setItem("user", JSON.stringify(item));

                this.eMail = eMail;
                this.$eMail.next(this.eMail);
            })
            .catch(error => {
                console.log(error);
            });

        return this.$token;
    }