A security provider using the API of another Wappler app

There is an app A that is hosted on a private server. This server can only be accessed from one ip address. This ip address hosts a second server that is open to the Internet. App B is hosted on this server. App B communicates with app A only using the API. App A uses a security provider Wappler, using a database. How do I implement a security provider in app B so that it connects via the API to app A and the user can pass verification?