{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.858488,-0.512833,0.000000,0.000000,0.262569,-0.439543,0.858987,0.000000,-0.439738,0.736127,0.514536,0.000000,-2807198.427166,4699285.003481,3262705.233449,1],    "boundingVolume": {    "region": [2.109195,0.540404,2.109360,0.540529,0.000000,9.441233]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/5/8_259916.b3dm"}}}