{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.951823,-0.306647,0.000000,0.000000,0.114805,-0.356350,0.927273,0.000000,-0.284077,0.881764,0.376553,0.000000,-1812739.963755,5626685.030657,2386761.104647,1],    "boundingVolume": {    "region": [1.882408,0.386058,1.882522,0.386087,0.000000,10.347008]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/15_35023.b3dm"}}}