React/通知をSlackに送る

//送信データ(JSON)
const payload = {
        text: "問い合わせ\n" + "名前: " + name + "\n" + "email: " + email +  "\n" + "内容: " + description
    }

    const url = "WebHook URL"

    fetch(url,{
        method: "POST",
        body: JSON.stringify(payload)
    }).then(() => {
        alert("送信完了")
        this.setState({
            name: "",
            email: "",
            description: ""
        })
        return this.props.handleClose()
    })