{"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":"749444593d9748aba3c329362adfb64d","collectionName":"cities","type":"collection"}