{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950554,-0.310559,0.000000,0.000000,0.173696,-0.531648,0.828963,0.000000,-0.256899,0.786313,0.561885,0.000000,-1640269.713070,5020518.830688,3563559.032434,1],    "boundingVolume": {    "region": [1.886528,0.596614,1.886626,0.596713,0.000000,10.961448]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/7_1394249.b3dm"}}}