{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949053,-0.315117,0.000000,0.000000,0.176152,-0.530524,0.829165,0.000000,-0.260734,0.785264,0.561586,0.000000,-1664752.436858,5013815.304849,3561656.052063,1],    "boundingVolume": {    "region": [1.891308,0.596248,1.891445,0.596355,0.000000,8.816635]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/12_1447917.b3dm"}}}