{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949486,-0.313810,0.000000,0.000000,0.175418,-0.530758,0.829171,0.000000,-0.259654,0.785628,0.561577,0.000000,-1657860.079366,5016137.904230,3561600.980901,1],    "boundingVolume": {    "region": [1.889950,0.596250,1.890049,0.596332,0.000000,8.785490]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/12_1444639.b3dm"}}}