{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950861,-0.309618,0.000000,0.000000,0.172781,-0.530625,0.829810,0.000000,-0.256385,0.787377,0.560628,0.000000,-1636979.376925,5027292.083574,3555567.925449,1],    "boundingVolume": {    "region": [1.885515,0.595034,1.885660,0.595254,0.000000,8.808238]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/12/9_1448404.b3dm"}}}