OpenIddict - Scope custom validation / parsing

I have an existing .NET Framework API that uses the built-in OWIN token stuff.

A client can request a new API access token (client_credentials) with their client_id and client_secret. They can optionally pass in a scope e.g. scope=account:{guid}. The scope value is then parsed so that we can store the account id {guid}

In OpenIddict, I have setup a scope called account like so:

options.RegisterScopes("account");

I have also added that scope to the database like so:

        var scopeManager = scope.ServiceProvider.GetRequiredService<IOpenIddictScopeManager>();

        if (await scopeManager.FindByNameAsync(CommonParameters.AccountScope) == null)
        {
            await scopeManager.CreateAsync(new OpenIddictScopeDescriptor
            {
                Name = CommonParameters.AccountScope,
            });
        }

When I make a new access token request like so:

    const string SCOPE = "account:00000000-0000-0000-0000-000000000000";

    var response = await client.RequestClientCredentialsTokenAsync(new ClientCredentialsTokenRequest
    {
        Address = configuration.TokenEndpoint,
        ClientId = CommonParameters.ClientId,
        ClientSecret = CommonParameters.ClientSecret,
        Scope = SCOPE
    });

It returns invalid_scope. Is there a way to have scopes containing parameters that can be parsed and the parameters be stored somewhere? I don't want to have to set them up as individual scopes for each account id.