{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.858281,-0.513180,0.000000,0.000000,0.262972,-0.439814,0.858726,0.000000,-0.439901,0.735723,0.514976,0.000000,-2808240.652940,4696709.903760,3265496.243058,1],    "boundingVolume": {    "region": [2.109602,0.540920,2.109763,0.541039,0.000000,48.306900]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/12.b3dm"}}}