{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950555,-0.310556,0.000000,0.000000,0.173676,-0.531590,0.829005,0.000000,-0.256909,0.786354,0.561823,0.000000,-1640337.644729,5020778.489722,3563164.570043,1],    "boundingVolume": {    "region": [1.886525,0.596539,1.886623,0.596638,0.000000,12.847205]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/6_1391900.b3dm"}}}