{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949289,-0.314403,0.000000,0.000000,0.175752,-0.530655,0.829166,0.000000,-0.260144,0.785461,0.561584,0.000000,-1660985.573664,5015073.061986,3561644.017183,1],    "boundingVolume": {    "region": [1.890575,0.596258,1.890674,0.596340,0.000000,8.812643]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/13/13_1447877.b3dm"}}}