{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.948821,-0.315815,0.000000,0.000000,0.176345,-0.529803,0.829585,0.000000,-0.261445,0.785473,0.560962,0.000000,-1669292.247730,5015141.118337,3557689.097274,1],    "boundingVolume": {    "region": [1.892064,0.595436,1.892160,0.595659,0.000000,8.778929]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/15_1071008.b3dm"}}}