{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950699,-0.310115,0.000000,0.000000,0.173242,-0.531097,0.829412,0.000000,-0.256672,0.786862,0.561220,0.000000,-1638816.205718,5024012.936614,3559329.366458,1],    "boundingVolume": {    "region": [1.886052,0.595802,1.886168,0.595916,0.000000,8.747232]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/13_1425543.b3dm"}}}