{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.852825,-0.522197,0.000000,0.000000,0.269403,-0.439974,0.856647,0.000000,-0.446536,0.729259,0.518447,0.000000,-2850634.666820,4655501.805661,3287548.661870,1],    "boundingVolume": {    "region": [2.120145,0.544985,2.120299,0.545082,0.000000,101.162100]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/1/0/1_21256.b3dm"}}}