curl --request POST \
  --url https://api.getovra.com/checkout/proxy \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "token": "<string>",
  "request": {
    "url": "<string>",
    "method": "POST",
    "headers": {},
    "body": "<unknown>"
  }
}
'

{
  "status": "completed",
  "httpStatus": 123,
  "body": "<unknown>",
  "timingMs": 123,
  "placeholdersReplaced": [
    "<string>"
  ],
  "error": "<string>"
}