{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950662,-0.310230,0.000000,0.000000,0.173377,-0.531292,0.829258,0.000000,-0.256719,0.786684,0.561447,0.000000,-1639119.929247,5022882.213682,3560775.311967,1],    "boundingVolume": {    "region": [1.886182,0.596085,1.886280,0.596183,0.000000,8.760521]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/2/1_1426956.b3dm"}}}