{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949770,-0.312950,0.000000,0.000000,0.115301,-0.349927,0.929654,0.000000,-0.290669,0.882148,0.370577,0.000000,-1854776.478423,5629047.070140,2348847.063622,1],    "boundingVolume": {    "region": [1.889025,0.379539,1.889163,0.379721,0.000000,8.515631]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/8_73109.b3dm"}}}