{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.858356,-0.513055,0.000000,0.000000,0.262695,-0.439496,0.858973,0.000000,-0.439921,0.736001,0.514560,0.000000,-2808366.978651,4698479.750878,3262858.287826,1],    "boundingVolume": {    "region": [2.109454,0.540432,2.109619,0.540557,0.000000,5.088766]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/8_263710.b3dm"}}}