{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949252,-0.314517,0.000000,0.000000,0.175890,-0.530858,0.829007,0.000000,-0.260187,0.785278,0.561820,0.000000,-1661264.280621,5013908.324080,3563143.458574,1],    "boundingVolume": {    "region": [1.890693,0.596573,1.890795,0.596595,0.000000,13.909362]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/15/8_1418280.b3dm"}}}