{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949451,-0.313915,0.000000,0.000000,0.175463,-0.530695,0.829202,0.000000,-0.259751,0.785629,0.561531,0.000000,-1658478.575416,5016144.570975,3561305.617466,1],    "boundingVolume": {    "region": [1.890061,0.596194,1.890160,0.596276,0.000000,8.656528]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/12_1443696.b3dm"}}}