{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949302,-0.314365,0.000000,0.000000,0.175749,-0.530715,0.829128,0.000000,-0.260100,0.785435,0.561640,0.000000,-1660708.839921,5014909.034239,3562001.594361,1],    "boundingVolume": {    "region": [1.890535,0.596326,1.890634,0.596408,0.000000,8.812643]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/13/13_1416934.b3dm"}}}