{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.858515,-0.512789,0.000000,0.000000,0.262474,-0.439436,0.859071,0.000000,-0.439744,0.736222,0.514395,0.000000,-2807232.193569,4699890.071028,3261810.550355,1],    "boundingVolume": {    "region": [2.109144,0.540240,2.109308,0.540365,0.000000,16.841433]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/5/6_247521.b3dm"}}}