loopback-ds-timestamp-mixin | automatically generate createdAt and updatedAt Date | Web Framework library

I'm using loopback as the API server for my application. I'm building a social like network, where it's required to invite users via email. In order to associate the invitee with the inviter, I want the inviter to create a 'request token' associated with his userId, which then is sent via email in a format like this: domain.com/register?token=XXXXXX

The built-in Access Token model seems perfect for this purpose as a base model used so the idea is to create a new model "RequestToken" inheriting from the AccessToken model, however, the new model is then used for authentication purposes as well, which I don't want.

Following are my config files. It's worth mentioning that the below seen "Customer" model is extending Loopbacks "User" Model.

/server/model-config.json: