{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.951238,-0.308458,0.000000,0.000000,0.115643,-0.356627,0.927062,0.000000,-0.285688,0.881020,0.377076,0.000000,-1823024.166569,5621941.646390,2390081.026621,1],    "boundingVolume": {    "region": [1.884286,0.386586,1.884449,0.386689,0.000000,50.877537]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/15/13_16642.b3dm"}}}