{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949542,-0.313639,0.000000,0.000000,0.175147,-0.530258,0.829548,0.000000,-0.259632,0.786035,0.561017,0.000000,-1657713.808321,5018729.012352,3558041.021584,1],    "boundingVolume": {    "region": [1.889738,0.595481,1.889900,0.595747,0.000000,8.487408]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/9/15_1366530.b3dm"}}}