{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950682,-0.310166,0.000000,0.000000,0.173348,-0.531325,0.829243,0.000000,-0.256661,0.786687,0.561470,0.000000,-1638751.755644,5022900.530792,3560917.970315,1],    "boundingVolume": {    "region": [1.886115,0.596112,1.886213,0.596210,0.000000,8.760521]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/2/1_1427282.b3dm"}}}