{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950753,-0.309950,0.000000,0.000000,0.173155,-0.531143,0.829400,0.000000,-0.256532,0.786896,0.561237,0.000000,-1637924.653241,5024228.179443,3559435.212970,1],    "boundingVolume": {    "region": [1.885864,0.595769,1.886010,0.595989,0.000000,8.813958]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/15/12_1422096.b3dm"}}}