{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950683,-0.310164,0.000000,0.000000,0.173146,-0.530710,0.829679,0.000000,-0.256796,0.787105,0.560822,0.000000,-1639605.125128,5025558.119097,3556800.806219,1],    "boundingVolume": {    "region": [1.886104,0.595321,1.886219,0.595436,0.000000,8.789628]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/9_1450725.b3dm"}}}