Easier ACL interface for REST management (JSON output?)

We use the management interface over HTTPS to create queues and exchanges, as well as managing ACLs to give and remove access to said queues and exchanges. We have lots of extra code to parse ACLs from the management interface, which is brittle and prone to braking. The ACLs are stored in the config.json as JSON, and then transformed to a bespoke format returned to the client, which then has to parse this format for manipulation. Would it not be much easier to just return the JSON, which is a lot easier to parse?

If there's code/clients that require the bespoke format, maybe return JSON on a parameter/request header?