{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.896740,-0.442558,0.000000,0.000000,0.282708,-0.572841,0.769369,0.000000,-0.339555,0.688028,0.641342,0.000000,-2168717.034091,4394391.484920,4068789.598473,1],    "boundingVolume": {    "region": [2.029155,0.696190,2.029337,0.696302,0.000000,45.707514]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/3/4/7_473250.b3dm"}}}