{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949336,-0.314264,0.000000,0.000000,0.175680,-0.530697,0.829155,0.000000,-0.260025,0.785488,0.561601,0.000000,-1660227.305676,5015247.196749,3561751.630978,1],    "boundingVolume": {    "region": [1.890428,0.596279,1.890527,0.596360,0.000000,8.803256]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/12/13_1448255.b3dm"}}}