{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950282,-0.311390,0.000000,0.000000,0.173307,-0.528890,0.830807,0.000000,-0.258165,0.787853,0.559141,0.000000,-1648334.374138,5030299.544140,3546119.422150,1],    "boundingVolume": {    "region": [1.887414,0.593299,1.887489,0.593400,0.000000,8.670806]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/12.b3dm"}}}