{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.852954,-0.521986,0.000000,0.000000,0.269348,-0.440129,0.856585,0.000000,-0.446323,0.729316,0.518550,0.000000,-2849272.441389,4655869.536045,3288204.317187,1],    "boundingVolume": {    "region": [2.119928,0.545112,2.120020,0.545197,0.000000,58.670700]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/2/1/2_4446.b3dm"}}}