{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950460,-0.310848,0.000000,0.000000,0.173532,-0.530597,0.829671,0.000000,-0.257360,0.786912,0.560835,0.000000,-1643207.757279,5024322.719929,3556883.028768,1],    "boundingVolume": {    "region": [1.886832,0.595336,1.886932,0.595452,0.000000,8.818353]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/2/9_1450834.b3dm"}}}