How to access to user token and token_secret Twitter

It makes sense, for now I managed to create a RULE that does something like this:

rule

function (user, context, callback) {

context.idToken['https://example.com/access_token'] = user.identities[0].access_token;
context.idToken['https://example.com/access_token_secret'] = user.identities[0].access_token_secret;

I don’t like this solution, because it inserts the twitter tokens into the jwt contained in the idToken parameter.

What I would like to do is hang Twitter tokens to the token response generated by auth0. How can I do?