db={"collection":[{"_id":ObjectId("5ce7454f77af2d1143f84c38"),"menu_name":"mainmenu1","sub_menus":[{"name":"submenu1","project":["All"]},{"name":"submenu2","project":["p2"]}]}],"project":[{"project_name":"p1","sub_menus":"submenu1",},{"project_name":"p2","sub_menus":"submenu2",}]}

db.collection.find()