{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950690,-0.310144,0.000000,0.000000,0.173130,-0.530700,0.829689,0.000000,-0.256782,0.787119,0.560808,0.000000,-1639519.147536,5025649.341918,3556712.141507,1],    "boundingVolume": {    "region": [1.886083,0.595304,1.886198,0.595419,0.000000,8.789628]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/9_1450639.b3dm"}}}