{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949363,-0.314181,0.000000,0.000000,0.175235,-0.529509,0.830008,0.000000,-0.260226,0.786326,0.560333,0.000000,-1661501.787828,5020576.792744,3553693.952930,1],    "boundingVolume": {    "region": [1.890309,0.594655,1.890471,0.594921,0.000000,8.789339]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/12/12_1461908.b3dm"}}}