{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.871419,-0.490539,0.000000,0.000000,0.211760,-0.376182,0.902023,0.000000,-0.441921,0.785051,0.434052,0.000000,-2820411.476391,5010323.255632,2751643.722960,1],    "boundingVolume": {    "region": [2.083449,0.448945,2.083561,0.449026,0.000000,62.954785]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/3/1/1_221861.b3dm"}}}