{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950542,-0.310597,0.000000,0.000000,0.173836,-0.532002,0.828707,0.000000,-0.256850,0.786057,0.562265,0.000000,-1639961.817789,5018893.712388,3565972.826174,1],    "boundingVolume": {    "region": [1.886568,0.597073,1.886666,0.597172,0.000000,8.533018]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/12_1384020.b3dm"}}}