{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949064,-0.315084,0.000000,0.000000,0.115886,-0.349059,0.929908,0.000000,-0.292732,0.881736,0.369933,0.000000,-1867939.013965,5626408.059948,2344763.228200,1],    "boundingVolume": {    "region": [1.891289,0.378902,1.891394,0.378972,0.000000,37.599186]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/6/21_5991.b3dm"}}}