{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949072,-0.315059,0.000000,0.000000,0.176198,-0.530773,0.828996,0.000000,-0.260632,0.785118,0.561836,0.000000,-1664105.290052,5012892.100411,3563246.890732,1],    "boundingVolume": {    "region": [1.891264,0.596593,1.891366,0.596615,0.000000,10.428684]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/9_1419579.b3dm"}}}