Signicat with onfido capture flow

I have integrated onfido with Signicat. What we want to achieve is that we don’t want to show the document Country picker in the flow. As per the docs Docs link this endpoint takes a parameter in the request body which is an object (captureParameters) which accepts another parameter which is the defaultCountry which according to docs is
The default country (ISO 3166-1) to be used during the flow. This country is selected when there is a list of countries. Setting defaultCountry here in the request will override whatever defaultCountry is set in the capture configuration.

What I want to achieve is that the user country is selected by default or the user is not asked to select his country, since we already do it in our app