We have been able to get the information we needed. It needs to be called similar to some of the entitlement methods.
cq.mobile.entitlement.getSubscriptionInfo(successHandler, failureHandler);
If successful it will return JSON data with information related to the subscriptions that are available. What we were missing was understanding that it was part of entitlement and not something else.
What would really have saved us time is if it could be a UX call like how you can call the signin box.
cq.mobile.user.launchSignInUX();
If something could be created that would call the subscribe UX it would work in about 90% of the time.