{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949639,-0.313345,0.000000,0.000000,0.114447,-0.346850,0.930912,0.000000,-0.291433,0.883234,0.367374,0.000000,-1859642.430678,5635935.803674,2328529.013581,1],    "boundingVolume": {    "region": [1.889425,0.376059,1.889594,0.376309,0.000000,24.470724]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/4_28868.b3dm"}}}