curl --request POST \
  --url https://api.jetemail.com/outbound/transactional-keys/rotate \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "api_token": "transactional_a1b2c3d4"
}
'

{
  "success": true,
  "message": "Transactional key rotated successfully",
  "api_token": "transactional_e5f6a7b8"
}