const handler = async (req, res) => {
  const _fs_vid = req.cookies._fs_vid;
  const _fs_sid = req.cookies._fs_sid;

  const response = await fetch(
    "https://analytics.flowsery.com/analytics/api/v1/goals",
    {
      method: "POST",
      headers: {
        Authorization: `Bearer ${FLOWSERY_API_KEY}`,
        "Content-Type": "application/json",
      },
      body: JSON.stringify({
        websiteId: process.env.FLOWSERY_WEBSITE_ID,
        visitorUid: _fs_vid,
        sessionUid: _fs_sid,
        name: "newsletter_signup",
        metadata: {
          plan: "pro",
          form: "footer",
        },
      }),
    }
  );

  const result = await response.json();
  res.status(200).send("Goal tracked");
};

{
  "status": "success",
  "data": [{
    "message": "Custom event created successfully"
  }]
}