{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950701,-0.310109,0.000000,0.000000,0.173228,-0.531066,0.829434,0.000000,-0.256674,0.786885,0.561186,0.000000,-1638830.518407,5024161.838652,3559114.041924,1],    "boundingVolume": {    "region": [1.886046,0.595761,1.886162,0.595875,0.000000,8.784505]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/13_1425070.b3dm"}}}