{"indexes":[{"v":{"$numberInt":"2"},"key":{"_id":{"$numberInt":"1"}},"name":"_id_"},{"v":{"$numberInt":"2"},"key":{"model":{"$numberInt":"1"}},"name":"model_1","background":true,"unique":true}],"uuid":"be504c2b28af47818195e26265227f2a","collectionName":"counters","type":"collection"}