{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950451,-0.310874,0.000000,0.000000,0.173491,-0.530423,0.829790,0.000000,-0.257418,0.787020,0.560657,0.000000,-1643580.538133,5025008.462171,3555749.528954,1],    "boundingVolume": {    "region": [1.886859,0.595120,1.886958,0.595237,0.000000,8.731197]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/3/7_1449910.b3dm"}}}