{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.896788,-0.442461,0.000000,0.000000,0.287577,-0.582867,0.759977,0.000000,-0.335304,0.679600,0.652469,0.000000,-2141667.260458,4340769.465283,4139580.235975,1],    "boundingVolume": {    "region": [2.029048,0.710785,2.029227,0.710890,0.000000,19.138632]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/6/21_1781737.b3dm"}}}