curl --request POST \
  --url https://api.maildiver.com/v1/audiences \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "name": "Weekly newsletter subscribers"
}
'

{
  "id": "0195ceb7-f8cb-7558-b3aa-1280acb8b417"
}