{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950012,-0.312214,0.000000,0.000000,0.115701,-0.352058,0.928799,0.000000,-0.289715,0.881552,0.372734,0.000000,-1848700.819257,5625278.075950,2362533.913132,1],    "boundingVolume": {    "region": [1.888255,0.381902,1.888382,0.382005,0.000000,4.929704]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/20_63776.b3dm"}}}