https://mholt.github.io/json-to-go/
https://github.com/cosmtrek/air
It helps in dealing with dynamic JSONs of unknown structures.
I maintain my own fork of the library (just a single file) for my DSL/lang parser project [1]
[0]: https://github.com/Jeffail/gabs
[1]: https://github.com/HexmosTech/Lama2