{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950435,-0.310923,0.000000,0.000000,0.173519,-0.530417,0.829789,0.000000,-0.257459,0.787004,0.560660,0.000000,-1643836.723681,5024911.674976,3555767.758688,1],    "boundingVolume": {    "region": [1.886910,0.595124,1.887010,0.595241,0.000000,8.796614]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/3/7_1449931.b3dm"}}}