{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.896522,-0.443000,0.000000,0.000000,0.283517,-0.573768,0.768380,0.000000,-0.339453,0.686970,0.642530,0.000000,-2168076.814987,4387652.954176,4076345.007957,1],    "boundingVolume": {    "region": [2.029654,0.697720,2.029822,0.697870,0.000000,53.214907]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/2/1/2_508964.b3dm"}}}