{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.858460,-0.512880,0.000000,0.000000,0.262674,-0.439665,0.858893,0.000000,-0.439730,0.736021,0.514694,0.000000,-2807145.839507,4698614.035786,3263709.880352,1],    "boundingVolume": {    "region": [2.109250,0.540588,2.109414,0.540714,0.000000,26.278633]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/9_273676.b3dm"}}}