{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950101,-0.311941,0.000000,0.000000,0.173916,-0.529710,0.830157,0.000000,-0.258418,0.787081,0.560111,0.000000,-1649956.075346,5025388.181044,3552281.863688,1],    "boundingVolume": {    "region": [1.887950,0.594454,1.888114,0.594585,0.000000,8.638149]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/6_1378327.b3dm"}}}