{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949056,-0.315106,0.000000,0.000000,0.176145,-0.530525,0.829166,0.000000,-0.260725,0.785267,0.561585,0.000000,-1664696.533627,5013838.983679,3561648.896306,1],    "boundingVolume": {    "region": [1.891296,0.596247,1.891433,0.596353,0.000000,8.816635]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/12_1447886.b3dm"}}}