{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950685,-0.310159,0.000000,0.000000,0.173134,-0.530682,0.829700,0.000000,-0.256798,0.787126,0.560792,0.000000,-1639619.306968,5025692.013230,3556606.386276,1],    "boundingVolume": {    "region": [1.886098,0.595284,1.886214,0.595399,0.000000,8.787591]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/8_1450565.b3dm"}}}