{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.948985,-0.315321,0.000000,0.000000,0.176053,-0.529847,0.829619,0.000000,-0.261046,0.785641,0.560912,0.000000,-1666745.936493,5016213.337541,3557373.417418,1],    "boundingVolume": {    "region": [1.891522,0.595434,1.891660,0.595540,0.000000,8.815893]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/9/4_1071605.b3dm"}}}