{"indexes":[{"v":{"$numberInt":"2"},"key":{"_id":{"$numberInt":"1"}},"name":"_id_"},{"v":{"$numberInt":"2"},"key":{"unique_id":{"$numberInt":"1"}},"name":"unique_id_1","background":true,"unique":true}],"uuid":"ef907f56ab3f40cfa9cc44e7c42f6bc6","collectionName":"cities","type":"collection"}