{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949880,-0.312614,0.000000,0.000000,0.115179,-0.349974,0.929651,0.000000,-0.290355,0.882248,0.370583,0.000000,-1852777.122739,5629688.284928,2348887.967530,1],    "boundingVolume": {    "region": [1.888670,0.379546,1.888809,0.379728,0.000000,5.729981]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/8_73117.b3dm"}}}