{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949814,-0.312817,0.000000,0.000000,0.114599,-0.347961,0.930478,0.000000,-0.290805,0.882980,0.368481,0.000000,-1855639.202760,5634329.016858,2335553.168933,1],    "boundingVolume": {    "region": [1.888869,0.377250,1.889038,0.377500,0.000000,28.592697]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/2/9_21961.b3dm"}}}