{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950485,-0.310771,0.000000,0.000000,0.173446,-0.530478,0.829765,0.000000,-0.257325,0.787023,0.560695,0.000000,-1642987.015706,5025029.157348,3555992.928964,1],    "boundingVolume": {    "region": [1.886751,0.595166,1.886850,0.595283,0.000000,8.787647]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/2/8_1450231.b3dm"}}}