{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949077,-0.315045,0.000000,0.000000,0.116148,-0.349896,0.929560,0.000000,-0.292585,0.881414,0.370814,0.000000,-1867005.142703,5624369.811223,2350352.648545,1],    "boundingVolume": {    "region": [1.891246,0.379828,1.891355,0.379943,0.000000,73.888115]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/16/21_77629.b3dm"}}}