Cannot Properly Transform Unix Timestamp to DateTime in Mule 4

Epoch can be directly converted to DateTime in Dataweave

Try This

date: (object.properties.time as DateTime {unit : "milliseconds"})

output:

"date": "2014-01-01T23:51:36.02Z"

You can check the output by entering in the below link as well

https://www.unixtimestamp.com/

https://www.epochconverter.com/