let user = {
  email: 'test@mail.ru',
  password: 'Test123321'
};

let response = await fetch('http://cff1110e.ngrok.io/api/auth/login', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json;',
    'Accept': 'application/json'
  },
  body: JSON.stringify(user)
});

let result = await response.json();
console.log(result)