{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950349,-0.311185,0.000000,0.000000,0.173873,-0.531003,0.829340,0.000000,-0.257535,0.786504,0.561326,0.000000,-1644330.052128,5021727.813473,3560006.466514,1],    "boundingVolume": {    "region": [1.887187,0.595929,1.887286,0.596046,0.000000,8.806958]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/15_1430419.b3dm"}}}