[{"collection":"collection","count":1,"content":{"field_1":{"type":"array","arrayContent":{"type":"string","minLength":1,"maxLength":1},"minLength":3,"maxLength":3},"field_2":{"type":"array","arrayContent":{"type":"string","minLength":1,"maxLength":1},"minLength":3,"maxLength":3}},"indexes":[{"name":"ix","key":{"field_1":1,"field_2":1}}]}]

db.collection.find()