threefive
Your xml is not valid though. Signal should not have the scte35 namespace, as it is not in the scte35 namespace, check the schema. Signal should be Capitalized as well as Binary
on the command line do this:
printf '<Event id="6" ... </Event>'| threefive encode json 2> out.json
Edit out.json
re-encode
threefive encode xml binary < out.json