{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950710,-0.310082,0.000000,0.000000,0.173216,-0.531079,0.829428,0.000000,-0.256649,0.786887,0.561195,0.000000,-1638673.804126,5024171.471961,3559172.207975,1],    "boundingVolume": {    "region": [1.886017,0.595772,1.886133,0.595886,0.000000,8.784505]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/13_1425194.b3dm"}}}