{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950700,-0.310114,0.000000,0.000000,0.173347,-0.531420,0.829182,0.000000,-0.256599,0.786643,0.561560,0.000000,-1638354.551788,5022620.819808,3561491.371483,1],    "boundingVolume": {    "region": [1.886060,0.596221,1.886158,0.596319,0.000000,8.773119]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/1/2_1427578.b3dm"}}}