{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949060,-0.315096,0.000000,0.000000,0.176136,-0.530517,0.829173,0.000000,-0.260719,0.785277,0.561574,0.000000,-1664658.925685,5013899.566999,3561581.641040,1],    "boundingVolume": {    "region": [1.891286,0.596234,1.891423,0.596340,0.000000,8.715326]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/12_1447586.b3dm"}}}