{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950354,-0.311171,0.000000,0.000000,0.173861,-0.530993,0.829348,0.000000,-0.257526,0.786516,0.561314,0.000000,-1644273.299974,5021803.845390,3559925.969819,1],    "boundingVolume": {    "region": [1.887172,0.595914,1.887271,0.596031,0.000000,8.806958]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/15_1430289.b3dm"}}}