{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949081,-0.315033,0.000000,0.000000,0.176181,-0.530769,0.829002,0.000000,-0.260613,0.785131,0.561827,0.000000,-1663983.155223,5012973.376190,3563189.968788,1],    "boundingVolume": {    "region": [1.891238,0.596582,1.891339,0.596604,0.000000,10.428684]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/9_1418795.b3dm"}}}