{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.858278,-0.513186,0.000000,0.000000,0.262538,-0.439081,0.859233,0.000000,-0.440168,0.736159,0.514123,0.000000,-2809938.684077,4699482.304812,3260078.850097,1],    "boundingVolume": {    "region": [2.109607,0.539922,2.109771,0.540047,0.000000,95.756001]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/4_128438.b3dm"}}}