[{"user":1,"size":[0,10000],"count":3},{"user":1,"size":[10000,100000],"count":1},{"user":1,"size":[100000,"+inf"],"count":1},{"user":2,"size":[0,10000],"count":3},{"user":3,"size":[10000,100000],"count":1},{"user":3,"size":[100000,"+inf"],"count":1}]

db.collection.find()