{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.948739,-0.316059,0.000000,0.000000,0.176498,-0.529808,0.829549,0.000000,-0.261636,0.785372,0.561015,0.000000,-1670507.886121,5014492.993315,3558029.769834,1],    "boundingVolume": {    "region": [1.892321,0.595500,1.892417,0.595724,0.000000,8.473052]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/15_1146811.b3dm"}}}