{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949296,-0.314383,0.000000,0.000000,0.175758,-0.530712,0.829128,0.000000,-0.260114,0.785430,0.561641,0.000000,-1660799.816576,5014877.829635,3562003.099625,1],    "boundingVolume": {    "region": [1.890553,0.596327,1.890652,0.596408,0.000000,8.812643]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/13/13_1416931.b3dm"}}}