{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950451,-0.310874,0.000000,0.000000,0.114372,-0.349676,0.929863,0.000000,-0.288806,0.882982,0.370046,0.000000,-1842887.164992,5634362.384118,2345481.428739,1],    "boundingVolume": {    "region": [1.886834,0.379020,1.886983,0.379098,0.000000,11.093890]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/15_4116.b3dm"}}}