{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949066,-0.315077,0.000000,0.000000,0.176207,-0.530767,0.828998,0.000000,-0.260647,0.785115,0.561834,0.000000,-1664201.416385,5012869.285716,3563234.178611,1],    "boundingVolume": {    "region": [1.891283,0.596591,1.891384,0.596612,0.000000,10.428684]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/9_1419388.b3dm"}}}