{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.858258,-0.513219,0.000000,0.000000,0.262442,-0.438883,0.859364,0.000000,-0.440264,0.736255,0.513903,0.000000,-2810548.334390,4700091.093421,3258684.776112,1],    "boundingVolume": {    "region": [2.109645,0.539666,2.109809,0.539791,0.000000,46.872766]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/1_300490.b3dm"}}}