Exchange authorization code for API key

curl --request POST \
  --url https://api.dualentry.com/public/v2/oauth/token/ \
  --header 'Content-Type: application/json' \
  --header 'X-API-KEY: <api-key>' \
  --data '
{
  "code": "<string>",
  "code_verifier": "<string>",
  "redirect_uri": "<string>"
}
'

{
  "api_key": "<string>",
  "organization_id": 123,
  "user_email": "<string>"
}