{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950048,-0.312105,0.000000,0.000000,0.174279,-0.530505,0.829573,0.000000,-0.258370,0.786477,0.560980,0.000000,-1649655.208490,5021550.732361,3557806.775280,1],    "boundingVolume": {    "region": [1.888122,0.595504,1.888286,0.595635,0.000000,8.648813]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/9/15_1456001.b3dm"}}}