{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.858451,-0.512896,0.000000,0.000000,0.262375,-0.439146,0.859250,0.000000,-0.439928,0.736322,0.514095,0.000000,-2808406.166578,4700520.447211,3259903.904502,1],    "boundingVolume": {    "region": [2.109269,0.539890,2.109433,0.540015,0.000000,21.917633]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/3_216508.b3dm"}}}