curl --request POST \
  --url https://api.getsly.ai/v1/v1/ucp/identity/token \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "code": "<string>",
  "client_id": "<string>",
  "client_secret": "<string>",
  "redirect_uri": "<string>"
}
'

{
  "access_token": "<string>",
  "expires_in": 123,
  "scope": "<string>",
  "refresh_token": "<string>"
}