{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949475,-0.313841,0.000000,0.000000,0.115195,-0.348502,0.930202,0.000000,-0.291670,0.882401,0.369185,0.000000,-1861163.435356,5630642.446341,2340013.819380,1],    "boundingVolume": {    "region": [1.889948,0.378007,1.890117,0.378256,0.000000,13.038800]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/9/12_15539.b3dm"}}}