{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949126,-0.314898,0.000000,0.000000,0.176036,-0.530586,0.829150,0.000000,-0.260547,0.785309,0.561609,0.000000,-1663562.741248,5014107.743331,3561799.276847,1],    "boundingVolume": {    "region": [1.891076,0.596275,1.891214,0.596382,0.000000,8.262762]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/12_1415920.b3dm"}}}