Druid-kinesis-indexing-service giving unparseable characters

I am switching our ingestion from using tranquility to use druid-kinesis-indexing-service. However, when I connect to the data it is showing lines with correct json sandwiched between unparseable characters: eg:


This is a companion discussion topic for the original entry at https://stackoverflow.com/questions/72281740/druid-kinesis-indexing-service-giving-unparseable-characters