{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950550,-0.310573,0.000000,0.000000,0.173678,-0.531566,0.829019,0.000000,-0.256928,0.786363,0.561802,0.000000,-1640455.501427,5020836.852636,3563028.984390,1],    "boundingVolume": {    "region": [1.886543,0.596513,1.886641,0.596612,0.000000,12.476542]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/6_1329921.b3dm"}}}