{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950358,-0.311160,0.000000,0.000000,0.173626,-0.530295,0.829844,0.000000,-0.257672,0.786993,0.560577,0.000000,-1645200.767164,5024837.706134,3555244.912676,1],    "boundingVolume": {    "region": [1.887160,0.595024,1.887260,0.595141,0.000000,8.707083]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/7_1452950.b3dm"}}}