Pass international phone format while updating phone number with Quickbase Restful API

I need to pass phone numbers from a 3rd party app to Quickbase via the Restful API. We receive phone numbers from outside the United States, so I need to pass in the country format as well as the phone number.

After all my research, it seems like you can only change the country format through the Quickbase user interface. However, if there is a way to not have users do double the work, that would be ideal.