{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949488,-0.313804,0.000000,0.000000,0.175415,-0.530757,0.829172,0.000000,-0.259650,0.785630,0.561575,0.000000,-1657833.224898,5016155.761321,3561588.415856,1],    "boundingVolume": {    "region": [1.889944,0.596248,1.890043,0.596329,0.000000,8.785490]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/12_1444608.b3dm"}}}