{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949606,-0.313447,0.000000,0.000000,0.173689,-0.526202,0.832432,0.000000,-0.260383,0.788846,0.556707,0.000000,-1662483.146224,5036595.955519,3530647.469687,1],    "boundingVolume": {    "region": [1.889557,0.590354,1.889676,0.590479,0.000000,8.357407]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/20/15_1338742.b3dm"}}}