{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.948964,-0.315383,0.000000,0.000000,0.176009,-0.529598,0.829787,0.000000,-0.261151,0.785786,0.560661,0.000000,-1667414.500779,5017129.842743,3555778.030265,1],    "boundingVolume": {    "region": [1.891609,0.595089,1.891704,0.595279,0.000000,8.584053]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/29_1073893.b3dm"}}}