{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.871357,-0.490650,0.000000,0.000000,0.211803,-0.376146,0.902028,0.000000,-0.442023,0.784999,0.434041,0.000000,-2821062.839048,5009994.559563,2751574.953018,1],    "boundingVolume": {    "region": [2.083575,0.448933,2.083688,0.449014,0.000000,50.372445]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/3/2/1_221531.b3dm"}}}