{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949486,-0.313810,0.000000,0.000000,0.175417,-0.530754,0.829174,0.000000,-0.259655,0.785630,0.561573,0.000000,-1657864.568797,5016156.504565,3561572.883749,1],    "boundingVolume": {    "region": [1.889950,0.596245,1.890049,0.596326,0.000000,8.785490]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/12_1444571.b3dm"}}}