window.fetch('url here',{
	method: 'POST',
	headers: {
		"Content-Type": "application/json",
    },
	body: JSON.stringify({
        model: {
            ActionUrl: "",
            DisplayLinkEmail: false,
            Password: this.state.password,
            RememberMe: false,
            UserName: this.state.username,
            reCaptchaResponse: ""
        },
        returnUrl: ""
    })
}).then((response)=>{
	console.log(response);
	return response.json();
}).then((data)=>{
	console.log(data);
});