{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.898362,-0.439256,0.000000,0.000000,0.284062,-0.580959,0.762755,0.000000,-0.334101,0.683300,0.649213,0.000000,-2133957.323895,4364344.074019,4118861.835280,1],    "boundingVolume": {    "region": [2.025517,0.706511,2.025617,0.706586,0.000000,43.122198]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/9/6_1818950.b3dm"}}}