Database
[{"_id":"61922aed85c74b2d1ef671be","day":"2021-09-01T21:00:00.000Z","data":{"hours":0,"type":"OT","_id":"61922aed85c74b2d1ef671bf","updateDate":"2021-11-15T09:39:57.624Z"}}]
Query
db.collection.aggregate([{"$project":{"day":1,"hours":"$data.hours","type":"$data.type","updateDate":"$data.updateDate"}}])