{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949885,-0.312601,0.000000,0.000000,0.115216,-0.350101,0.929599,0.000000,-0.290327,0.882202,0.370716,0.000000,-1852596.211480,5629394.981788,2349727.805021,1],    "boundingVolume": {    "region": [1.888657,0.379689,1.888795,0.379870,0.000000,10.318123]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/8_73590.b3dm"}}}