{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949251,-0.314520,0.000000,0.000000,0.175890,-0.530853,0.829010,0.000000,-0.260191,0.785279,0.561816,0.000000,-1661289.704042,5013920.177471,3563115.116456,1],    "boundingVolume": {    "region": [1.890697,0.596568,1.890798,0.596590,0.000000,12.158454]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/15/8_1418121.b3dm"}}}