{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950272,-0.311421,0.000000,0.000000,0.173314,-0.528851,0.830830,0.000000,-0.258198,0.787867,0.559107,0.000000,-1648546.194221,5030386.843770,3545898.598531,1],    "boundingVolume": {    "region": [1.887399,0.593208,1.887570,0.593408,0.000000,8.223336]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/12_1321302.b3dm"}}}