{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950646,-0.310278,0.000000,0.000000,0.173527,-0.531662,0.828990,0.000000,-0.256675,0.786414,0.561846,0.000000,-1638842.044647,5021164.632525,3563307.676488,1],    "boundingVolume": {    "region": [1.886233,0.596566,1.886331,0.596665,0.000000,12.082541]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/3/6_1393031.b3dm"}}}