curl --request POST \
  --url https://api.example.com/api/oauth/exchange \
  --header 'Content-Type: application/json' \
  --data '
{
  "code": "<string>",
  "state": "<string>",
  "error": "<string>",
  "code_verifier": "<string>"
}
'

{
  "access_token": "<string>",
  "user": {
    "id": "<string>",
    "email": "<string>",
    "first_name": "<string>",
    "last_name": "<string>",
    "clerk_user_id": "<string>",
    "is_active": true,
    "is_verified": true
  }
}