{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949320,-0.314310,0.000000,0.000000,0.175716,-0.530722,0.829131,0.000000,-0.260055,0.785452,0.561637,0.000000,-1660419.812415,5015020.802290,3561979.128056,1],    "boundingVolume": {    "region": [1.890476,0.596322,1.890575,0.596404,0.000000,8.803256]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/12/13_1416830.b3dm"}}}