[{"_id":ObjectId("625c81d7622b044fb297ce54"),"userId":"00uvgyn7OikAwud6","first_name":"John",last_name:"Smith",newList:[{list_name:"read",books:[{book_name:"The Great Gatsby",book_author:"Francis Scott Fitzgerald",date_added:"2022-04-19T00:43:24.248+00:00",date_finished:"2022-04-19T00:43:24.252+00:00",}]}],}]

db.collection.update({userId:"00uvgyn7OikAwud6",newList:{$elemMatch:{list_name:"read"}}},{$push:{"newList.$.books":{book_name:"a new book",book_author:"some author",date_added:new Date()}}})