build a json file as combining flavors in android

Question

I am currently using a json file under asset. this json file looks something like this(just an example):

{
  "endpoint": "https://testServer.com",
  "appId": "aaaaaa",
  "verificationType": "digit",
  "version": "1.0"
}

I have different values for endpoint and verificationType like:
endpoints : testServer, prodServer
verificationType: digit, alphanumeric, bio
(appId and version are currently not changing at the moment)
so I would like to create flavors for those with this:

flavorDimensions "verificationType", "endpoint"

productFlavors {

    digit {
        dimension "verificationType"
    }
    alphanumeric {
        dimension "verificationType"
    }
    bio {
        dimension "verificationType"
    }

    testServer {
        dimension "endpoint"
    }
    prodServer {
        dimension "endpoint"
    }
}

then I created folder directories for each flavor.

now, I want to know how to create each json file under asset folder in each flavor directory. for example, I want to put only "verificationType": "digit" in json file in asset folder under digit flavor directory. then put "endpoint": "testServer" in json file in asset folder under testServer flavor directory. and so on.

is this something doable thing? otherwise any other approach recommended for this situation?

Thank you in andvance.