{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.897197,-0.441631,0.000000,0.000000,0.285334,-0.579672,0.763259,0.000000,-0.336132,0.682869,0.648618,0.000000,-2146918.306581,4361578.403902,4115079.751836,1],    "boundingVolume": {    "region": [2.028160,0.705733,2.028264,0.705802,0.000000,7.993424]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/15/20_1837105.b3dm"}}}