{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949035,-0.315172,0.000000,0.000000,0.175960,-0.529845,0.829640,0.000000,-0.260930,0.785702,0.560881,0.000000,-1666001.912188,5016602.573294,3557174.396687,1],    "boundingVolume": {    "region": [1.891366,0.595396,1.891503,0.595503,0.000000,8.713676]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/4_1071957.b3dm"}}}