{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950500,-0.310725,0.000000,0.000000,0.173730,-0.531435,0.829093,0.000000,-0.257077,0.786392,0.561693,0.000000,-1641407.780729,5021018.920883,3562338.438584,1],    "boundingVolume": {    "region": [1.886703,0.596382,1.886801,0.596481,0.000000,8.782471]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/4_1388976.b3dm"}}}