=== one Quote, five fields, three encodings ===
protobuf :  35 bytes  0a044141504c102a197b14ae47e11a5940215c8fc2f5281c5940288080abb4fef39203
JSON     :  83 bytes  {"symbol":"AAPL","seq":42,"bid":100.42,"ask":100.44,"epochMicros":1772000000000000}
CBOR     :  67 bytes  bf6673796d626f6c644141504c63736571182a63626964fb40591ae147ae147b6361736bfb40591c28f5c28f5c6b65706f63684d6963726f731b00064b9fe68ac000ff
JSON is 2.37x protobuf; CBOR is 1.91x protobuf