{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950452,-0.310873,0.000000,0.000000,0.114397,-0.349754,0.929831,0.000000,-0.288795,0.882951,0.370129,0.000000,-1842817.618195,5634165.895928,2346004.487643,1],    "boundingVolume": {    "region": [1.886833,0.379108,1.886982,0.379187,0.000000,19.337587]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/16_4536.b3dm"}}}