{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950425,-0.310954,0.000000,0.000000,0.173435,-0.530101,0.830008,0.000000,-0.257553,0.787206,0.560333,0.000000,-1644438.038067,5026193.633210,3553691.244895,1],    "boundingVolume": {    "region": [1.886902,0.594715,1.887084,0.594861,0.000000,8.415566]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/15/12_1457997.b3dm"}}}