{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.852821,-0.522203,0.000000,0.000000,0.269467,-0.440072,0.856577,0.000000,-0.446504,0.729195,0.518565,0.000000,-2850430.988377,4655095.768879,3288295.113318,1],    "boundingVolume": {    "region": [2.120140,0.545086,2.120318,0.545256,0.000000,161.644500]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/1/0/0_21470.b3dm"}}}