{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950512,-0.310687,0.000000,0.000000,0.173771,-0.531634,0.828956,0.000000,-0.257002,0.786272,0.561895,0.000000,-1640931.944985,5020257.264778,3563622.223333,1],    "boundingVolume": {    "region": [1.886663,0.596626,1.886760,0.596725,0.000000,9.754483]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/7_1394417.b3dm"}}}