We need to hide the datastructure

[sphaero]

Discussion here at z25... Since it is complex and you don't want to deal with the internals of ZOCP, like digging two layers deep into an array or dictionary....

Suggestion...
Use event types like in Zyre's extended api: https://github.com/zeromq/zyre/#extended-api

Or just use callbacks when registering parameters?