{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.858419,-0.512949,0.000000,0.000000,0.262589,-0.439441,0.859033,0.000000,-0.439862,0.736107,0.514459,0.000000,-2807986.318514,4699158.240084,3262213.099251,1],    "boundingVolume": {    "region": [2.109331,0.540314,2.109495,0.540439,0.000000,25.682700]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/7_252153.b3dm"}}}