curl --request POST \
  --url https://api.useduro.com/v1/payment-links \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "planId": "<string>",
  "slug": "pro",
  "metadata": {}
}
'

{
  "id": "<string>",
  "planId": "<string>",
  "slug": "<string>",
  "active": true,
  "createdAt": "<string>"
}