{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950571,-0.310508,0.000000,0.000000,0.173538,-0.531258,0.829246,0.000000,-0.256946,0.786598,0.561465,0.000000,-1640566.428785,5022329.651263,3560887.805700,1],    "boundingVolume": {    "region": [1.886475,0.596106,1.886573,0.596205,0.000000,8.801730]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/1_1427234.b3dm"}}}