{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.858276,-0.513189,0.000000,0.000000,0.262720,-0.439382,0.859023,0.000000,-0.440062,0.735976,0.514475,0.000000,-2809267.832317,4698318.079116,3262319.181859,1],    "boundingVolume": {    "region": [2.109611,0.540333,2.109775,0.540458,0.000000,54.673166]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/7_391375.b3dm"}}}