curl --request POST \
  --url https://api.mysubwallet.ng/api/esim/buy \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "package_id": "esim_abc",
  "package_type": "DATA-ONLY"
}
'

{
  "status": "success",
  "message": "eSIM purchased. Find it under My eSIMs."
}