Currently "™®字" is being converted to "\u2122\u00ae\u5b57".
Interestingly, if this is sent to Kinesis Enrich it gets converted back to "™®字" and there isn't a problem.
See http://stackoverflow.com/questions/18337407/saving-utf-8-texts-in-json-dumps-as-utf8-not-as-u-escape-sequence
Currently "™®字" is being converted to "\u2122\u00ae\u5b57".
Interestingly, if this is sent to Kinesis Enrich it gets converted back to "™®字" and there isn't a problem.
See http://stackoverflow.com/questions/18337407/saving-utf-8-texts-in-json-dumps-as-utf8-not-as-u-escape-sequence