{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.852948,-0.521996,0.000000,0.000000,0.269373,-0.440159,0.856562,0.000000,-0.446319,0.729291,0.518589,0.000000,-2849249.183314,4655708.484850,3288450.833229,1],    "boundingVolume": {    "region": [2.119940,0.545158,2.120032,0.545242,0.000000,62.700233]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/2/1/2_4491.b3dm"}}}