{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949452,-0.313911,0.000000,0.000000,0.175465,-0.530709,0.829193,0.000000,-0.259744,0.785621,0.561545,0.000000,-1658436.709752,5016095.227359,3561394.017703,1],    "boundingVolume": {    "region": [1.890056,0.596211,1.890155,0.596292,0.000000,8.656528]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/12_1443993.b3dm"}}}