{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.951984,-0.306147,0.000000,0.000000,0.114627,-0.356440,0.927260,0.000000,-0.283609,0.881901,0.376584,0.000000,-1809758.259748,5627559.564852,2386960.650390,1],    "boundingVolume": {    "region": [1.881933,0.386094,1.881946,0.386118,0.000000,6.426506]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/16/16.b3dm"}}}