{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950813,-0.309767,0.000000,0.000000,0.172589,-0.529752,0.830407,0.000000,-0.256694,0.787909,0.559738,0.000000,-1638949.328882,5030672.028398,3549913.416707,1],    "boundingVolume": {    "region": [1.885653,0.593997,1.885835,0.594143,0.000000,6.731379]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/7_1375318.b3dm"}}}