{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.858371,-0.513030,0.000000,0.000000,0.262640,-0.439433,0.859022,0.000000,-0.439925,0.736056,0.514478,0.000000,-2808391.082500,4698830.276288,3262336.246094,1],    "boundingVolume": {    "region": [2.109425,0.540336,2.109589,0.540461,0.000000,10.671233]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/7_253274.b3dm"}}}