{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949300,-0.314371,0.000000,0.000000,0.175746,-0.530695,0.829142,0.000000,-0.260109,0.785446,0.561621,0.000000,-1660767.440066,5014979.841450,3561875.431291,1],    "boundingVolume": {    "region": [1.890541,0.596302,1.890640,0.596384,0.000000,8.812643]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/13/13_1416250.b3dm"}}}