curl --request POST \
  --url https://api.referralful.com/v1/affiliate_coupons \
  --header 'Authorization: Basic <encoded-value>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "affiliate_id": "<string>",
  "token": "<string>"
}
'

{
  "id": "<string>",
  "object": "affiliate_coupon",
  "token": "<string>",
  "affiliate_id": "<string>"
}