{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.858390,-0.512998,0.000000,0.000000,0.262458,-0.439167,0.859214,0.000000,-0.439997,0.736238,0.514156,0.000000,-2808846.708331,4699988.886533,3260288.160269,1],    "boundingVolume": {    "region": [2.109388,0.539960,2.109552,0.540086,0.000000,101.578900]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/4_220453.b3dm"}}}