{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949009,-0.315248,0.000000,0.000000,0.116239,-0.349922,0.929539,0.000000,-0.292766,0.881332,0.370867,0.000000,-1868163.212030,5623843.688093,2350689.106209,1],    "boundingVolume": {    "region": [1.891460,0.379885,1.891568,0.380000,0.000000,21.690475]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/19/21_3486.b3dm"}}}