{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950565,-0.310525,0.000000,0.000000,0.173623,-0.531485,0.829083,0.000000,-0.256909,0.786437,0.561708,0.000000,-1640331.529018,5021305.841645,3562429.146180,1],    "boundingVolume": {    "region": [1.886493,0.596399,1.886591,0.596498,0.000000,8.782607]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/4_1389162.b3dm"}}}