{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949085,-0.315020,0.000000,0.000000,0.176180,-0.530790,0.828989,0.000000,-0.260598,0.785122,0.561847,0.000000,-1663886.784029,5012916.754029,3563313.795439,1],    "boundingVolume": {    "region": [1.891224,0.596606,1.891325,0.596627,0.000000,9.660840]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/10_1420629.b3dm"}}}