{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949452,-0.313911,0.000000,0.000000,0.175464,-0.530707,0.829194,0.000000,-0.259745,0.785622,0.561543,0.000000,-1658440.066398,5016101.438812,3561383.775013,1],    "boundingVolume": {    "region": [1.890056,0.596209,1.890155,0.596290,0.000000,8.656528]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/12_1443935.b3dm"}}}