{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950584,-0.310467,0.000000,0.000000,0.173665,-0.531724,0.828921,0.000000,-0.256810,0.786297,0.561947,0.000000,-1639705.524349,5020422.133394,3563952.236855,1],    "boundingVolume": {    "region": [1.886432,0.596689,1.886530,0.596787,0.000000,11.035601]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/5/7_1394990.b3dm"}}}