{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950752,-0.309953,0.000000,0.000000,0.173353,-0.531745,0.828973,0.000000,-0.256401,0.786486,0.561870,0.000000,-1637088.753786,5021625.055953,3563463.739866,1],    "boundingVolume": {    "region": [1.885857,0.596561,1.886022,0.596730,0.000000,8.809550]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/3/4/2_1386676.b3dm"}}}