const onSubmit = (data) => {
        const bodyFormData = new FormData();
        bodyFormData.append("email", data.email);
        bodyFormData.append("csrfToken", csrfToken);

        axios({
            method: "post",
            url: "/api/auth/signin/email",
            data: bodyFormData,
            headers: { "Content-Type": "multipart/form-data" },
        })
    };

<form action="/api/auth/signin/email" method="post">
            <input type="hidden" defaultValue={csrfToken} name="csrfToken" />