{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950289,-0.311369,0.000000,0.000000,0.173176,-0.528528,0.831064,0.000000,-0.258228,0.788105,0.558757,0.000000,-1648739.126465,5031900.053235,3543676.136477,1],    "boundingVolume": {    "region": [1.887345,0.592786,1.887515,0.592986,0.000000,7.376692]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/9_1462457.b3dm"}}}