Concise Binary Object Representation (CBOR) is a superset of JSON's schema that's faster and more compact.
import cbor "github.com/brianolson/cbor_go"
This implementation attempts to do serialization to/from struct types using reflection, but doesn't do 100% of cases like that right. It should do everything fine serializing map[string]interface{} and []interface{} and other basic types. It passes the test of decoding 100% of CBOR common appendix test strings.
For Python implementation see: https://github.com/brianolson/cbor_py