{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949071,-0.315063,0.000000,0.000000,0.175855,-0.529732,0.829735,0.000000,-0.260869,0.785823,0.560740,0.000000,-1665614.298964,5017371.533608,3556277.315691,1],    "boundingVolume": {    "region": [1.891250,0.595226,1.891388,0.595332,0.000000,8.820004]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/2_1375096.b3dm"}}}