{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950153,-0.311785,0.000000,0.000000,0.173915,-0.530000,0.829972,0.000000,-0.258230,0.786946,0.560386,0.000000,-1648761.174473,5024536.062162,3554029.838608,1],    "boundingVolume": {    "region": [1.887785,0.594786,1.887949,0.594917,0.000000,8.809282]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/9_1459990.b3dm"}}}