Currently, you do not support JSONB for Postgres:

https://fivetran.com/docs/destinations/postgresql#typetransformationmapping

JSONB has many great features. For example, it allows you to make indices on the columns:

CREATE INDEX idxgintags ON api USING gin ((jdoc -> 'tags'));

This is super helpful if you often do a `where` on your JSONB columns.

It shouldn't be much of a lift because Postgres converts from JSON to JSONB for you automatically.

Thanks!