{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.948819,-0.315820,0.000000,0.000000,0.176356,-0.529826,0.829568,0.000000,-0.261444,0.785455,0.560988,0.000000,-1669281.871441,5015027.721429,3557852.709006,1],    "boundingVolume": {    "region": [1.892069,0.595467,1.892165,0.595690,0.000000,8.800682]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/15_1181811.b3dm"}}}