Kafka connect MongoDB sink connector


I’m using Kafka connect Mongo-DB sink connector (persist messages from Kafka to Mongo).
The Kafka messages are simple JSON:
{"field":"value", "ttl": "1648022542"}

As you can see, I have a TTL field in each message.
I want to turn this TTL to persist in Mongo in a date format (I want this document to be deleted at this time and mongo can do it only on date formats and not timestamp).

Is there any way to achieve this?