{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949586,-0.313506,0.000000,0.000000,0.173704,-0.526136,0.832471,0.000000,-0.260445,0.788867,0.556648,0.000000,-1662876.260136,5036729.952439,3530273.686663,1],    "boundingVolume": {    "region": [1.889619,0.590283,1.889739,0.590408,0.000000,6.726611]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/14_1338772.b3dm"}}}