{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950545,-0.310587,0.000000,0.000000,0.173741,-0.531731,0.828901,0.000000,-0.256903,0.786245,0.561978,0.000000,-1640297.548653,5020090.716936,3564145.342088,1],    "boundingVolume": {    "region": [1.886558,0.596725,1.886656,0.596824,0.000000,8.782680]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/8_1395328.b3dm"}}}