curl --request POST \
  --url https://cloudapi.mailercloud.com/v2/campaign/save \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: <content-type>' \
  --data '
{
  "name": "Campaign name",
  "sender": {
    "sender_email": "sender@yourdomain.com",
    "sender_name": "Sender Name"
  },
  "subject": "Prime member notification."
}
'