{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.951861,-0.306530,0.000000,0.000000,0.112640,-0.349778,0.930036,0.000000,-0.284824,0.884458,0.369607,0.000000,-1817476.619535,5643775.553794,2342695.026223,1],    "boundingVolume": {    "region": [1.882259,0.378526,1.882423,0.378646,0.000000,12.243242]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/12_46491.b3dm"}}}