How to modify the domain in authData using Basic Auth

Hi,

We are currently building an integration with Zapier. Our application uses Basic-Auth, and our clients have user-based domains/URL’s. We want to ensure that when the user completes authentication that the domain in the bundle is correct for that user.

As part of the authentication step, we have built an endpoint that is called to retrieve the correct domain for the user. Is it possible to use this domain in the bundle? This is the code we have for the authentication step
 

const options = {
  url: 'https://xxxxxxxxxx/getdomain',
  method: 'GET',
  params: {
    username: bundle.authData.username,
  },
};

//The response is the domain for the user. We validate on our side and return the domain for the user

return z.request(options)
  .then((response) => {
    response.throwForStatus();
    const responseData = response.json;

    // Concatenate the characters into a single string
    const clientDomain = Object.values(responseData).join('');

    // Add the clientUrl to the bundle to use in later stages.
    //Can we set the domain here and use it in Triggers?
    bundle.authData.domain = clientDomain; 

    // Return the clientUrl
    return { clientDomain };

  });

Here is an example response after successful authentication:

 

Can we add this clientDomain to the authData and use it in Triggers, or is there a different/better approach we should follow?

Any help is greatly appreciated. Many thanks.