{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949520,-0.313707,0.000000,0.000000,0.175187,-0.530252,0.829544,0.000000,-0.259687,0.786012,0.561024,0.000000,-1658064.543267,5018584.146683,3558081.655228,1],    "boundingVolume": {    "region": [1.889810,0.595489,1.889972,0.595755,0.000000,8.487408]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/9/15_1366409.b3dm"}}}