{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950144,-0.311812,0.000000,0.000000,0.173939,-0.530020,0.829955,0.000000,-0.258247,0.786922,0.560413,0.000000,-1648869.513604,5024380.647742,3554198.153531,1],    "boundingVolume": {    "region": [1.887814,0.594818,1.887978,0.594949,0.000000,8.809282]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/9_1452035.b3dm"}}}