{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949076,-0.315048,0.000000,0.000000,0.176191,-0.530770,0.828999,0.000000,-0.260624,0.785124,0.561832,0.000000,-1664054.362475,5012928.949664,3563219.021326,1],    "boundingVolume": {    "region": [1.891253,0.596588,1.891354,0.596609,0.000000,10.428684]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/9_1419149.b3dm"}}}