The following dump was obtained from the cached GetGameMasterClientTemplatesOutProto message of Pokemon GO version 0.33.0-2016080700. The commands were used on a 0000015667288517_GAME_MASTER file extracted from the app's data, using POGOProtos@3682394:
$ xxd -p 0000015667288517_GAME_MASTER | tr -d '\n' > 0000015667288517_GAME_MASTER .hex
$ protoc --decode_raw < 0000015667288517_GAME_MASTER > 0000015667288517_GAME_MASTER .decoded_raw
$ protoc POGOProtos/src/POGOProtos/Networking/Responses/DownloadItemTemplatesResponse.proto --proto_path=POGOProtos/src --decode=POGOProtos.Networking.Responses.DownloadItemTemplatesResponse < 0000015667288517_GAME_MASTER > 0000015667288517_GAME_MASTER .decoded