{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949308,-0.314347,0.000000,0.000000,0.175458,-0.529873,0.829728,0.000000,-0.260275,0.786013,0.560750,0.000000,-1661816.665279,5018586.321563,3556339.434252,1],    "boundingVolume": {    "region": [1.890496,0.595238,1.890633,0.595344,0.000000,8.762143]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/2/2_1368553.b3dm"}}}