{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.858251,-0.513230,0.000000,0.000000,0.262713,-0.439323,0.859056,0.000000,-0.440114,0.735983,0.514421,0.000000,-2809596.231006,4698365.152678,3261970.906554,1],    "boundingVolume": {    "region": [2.109658,0.540269,2.109822,0.540394,0.000000,50.043633]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/7_387478.b3dm"}}}