{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950567,-0.310518,0.000000,0.000000,0.173619,-0.531487,0.829083,0.000000,-0.256903,0.786438,0.561708,0.000000,-1640294.518943,5021317.999151,3562429.051790,1],    "boundingVolume": {    "region": [1.886486,0.596399,1.886583,0.596498,0.000000,8.566649]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/4_1389158.b3dm"}}}