+1, the current key for associations, is

Associations:(Table name):(key)

without the role. Maybe we should adjust the JSON part to add the role to the association key.

I'll give it a spin. All items within a hash are represented as String. Currently, I run into issues when mapping enums as ordinal. The type override does not affect enum as ordinal; the tuple contains int values for enum ordinals, all other types are converted appropriately.