I am a newbie to Nifi Jolt transform.  I've been looking through the document, but still cannot figure out how to do a simple Jolt Transform. Input: {"id": 123456, "manager_id": 98765} desired output: {"reportTo": [{"userId": 98765}]}   I've got the part to change the manager_id to userId by the following Spec.  But I was stuck how to make it another layer.  Any insights/help to solve this?  [{ "operation": "shift", "spec": { "manager_id": "userId"} } }] ... View more