curl --request POST \
  --url https://folksbase.onrender.com/api/imports/{id}/confirm \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "columnMapping": {}
}
'

{
  "importId": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "status": "<string>"
}