{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950709,-0.310083,0.000000,0.000000,0.173105,-0.530736,0.829671,0.000000,-0.256727,0.787119,0.560834,0.000000,-1639164.400344,5025647.147929,3556877.630714,1],    "boundingVolume": {    "region": [1.886019,0.595336,1.886135,0.595450,0.000000,8.508191]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/9_1345166.b3dm"}}}