{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949484,-0.313815,0.000000,0.000000,0.175421,-0.530755,0.829172,0.000000,-0.259659,0.785628,0.561575,0.000000,-1657891.171047,5016137.818668,3561586.724713,1],    "boundingVolume": {    "region": [1.889956,0.596247,1.890054,0.596329,0.000000,8.785490]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/12_1444615.b3dm"}}}