{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949076,-0.315047,0.000000,0.000000,0.176191,-0.530776,0.828996,0.000000,-0.260622,0.785121,0.561837,0.000000,-1664039.357181,5012910.293985,3563252.051901,1],    "boundingVolume": {    "region": [1.891251,0.596594,1.891353,0.596616,0.000000,10.428684]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/9_1419746.b3dm"}}}