{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949013,-0.315236,0.000000,0.000000,0.176003,-0.529852,0.829626,0.000000,-0.260979,0.785672,0.560901,0.000000,-1666314.761111,5016408.364833,3557300.887944,1],    "boundingVolume": {    "region": [1.891433,0.595420,1.891571,0.595527,0.000000,8.815893]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/9/4_1071707.b3dm"}}}