{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950761,-0.309926,0.000000,0.000000,0.173222,-0.531394,0.829225,0.000000,-0.256457,0.786734,0.561497,0.000000,-1637446.609199,5023203.494021,3561089.841641,1],    "boundingVolume": {    "region": [1.885838,0.596084,1.885984,0.596304,0.000000,8.760186]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/15/14_1423251.b3dm"}}}