curl --request POST \
  --url https://api.example.com/v1/ui/payment-intents \
  --header 'Content-Type: application/json' \
  --header 'Idempotency-Key: <idempotency-key>' \
  --data '
{
  "customerRef": "<string>",
  "productRef": "<string>",
  "planRef": "<string>",
  "pricingTier": "<string>",
  "purpose": "product",
  "amount": 5000050,
  "currency": "<string>",
  "description": "<string>"
}
'

{
  "id": "<string>",
  "amount": 123,
  "currency": "<string>",
  "clientSecret": "<string>",
  "publishableKey": "<string>",
  "accountId": "<string>"
}