{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949081,-0.315032,0.000000,0.000000,0.176183,-0.530777,0.828996,0.000000,-0.260610,0.785126,0.561836,0.000000,-1663963.032899,5012941.091701,3563244.418514,1],    "boundingVolume": {    "region": [1.891236,0.596593,1.891337,0.596614,0.000000,10.428684]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/9_1419562.b3dm"}}}