{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949096,-0.314987,0.000000,0.000000,0.176073,-0.530530,0.829178,0.000000,-0.260630,0.785312,0.561567,0.000000,-1664091.598478,5014121.673116,3561534.396814,1],    "boundingVolume": {    "region": [1.891171,0.596225,1.891308,0.596331,0.000000,8.793916]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/12_1447422.b3dm"}}}