{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950718,-0.310057,0.000000,0.000000,0.173202,-0.531086,0.829427,0.000000,-0.256629,0.786892,0.561197,0.000000,-1638540.355511,5024206.831693,3559183.654800,1],    "boundingVolume": {    "region": [1.885991,0.595774,1.886107,0.595889,0.000000,8.784505]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/13_1343344.b3dm"}}}