Encode subscription name with special characters

Question

I am using the SubscriptionsByKey API endpoint. It says I can specify subscription name/number.

I created a subscription with this name:

foo, bar/baz

and this url would work: v1/subscriptions/foo%2C%20bar%2Fbaz

However if I add even more special characters, my current encoding mechanism would no longer be accepted by Zuora:

AZ~`!@#$%^&*()-_=+[{]}|;:'",<.>/?

What would be the correct way to encode such subscription name?