{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.858742,-0.512409,0.000000,0.000000,0.262324,-0.439627,0.859019,0.000000,-0.439391,0.736372,0.514482,0.000000,-2804983.233731,4700846.281491,3262363.608379,1],    "boundingVolume": {    "region": [2.108702,0.540341,2.108866,0.540467,0.000000,15.319766]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/2/7_253818.b3dm"}}}