[{"collection":"collection","count":50,"content":{"key":{"type":"int","min":0,"max":50}}}]

db.collection.aggregate([{"$facet":{"paginationMeta":[{"$match":{/**your match criteria here*/}},{"$count":"total_documents"}],page:[{"$match":{/**your match criteria here*/}},{"$sort":{key:1}},{"$skip":20},{"$limit":10}]}}])