{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.858313,-0.513126,0.000000,0.000000,0.262638,-0.439318,0.859082,0.000000,-0.440038,0.736058,0.514378,0.000000,-2809111.614356,4698844.997572,3261698.923772,1],    "boundingVolume": {    "region": [2.109537,0.540219,2.109701,0.540344,0.000000,57.121433]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/6_246922.b3dm"}}}