{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949076,-0.315048,0.000000,0.000000,0.176109,-0.530524,0.829174,0.000000,-0.260680,0.785291,0.561573,0.000000,-1664408.583567,5013989.919602,3561571.511562,1],    "boundingVolume": {    "region": [1.891235,0.596232,1.891373,0.596339,0.000000,8.793916]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/12_1447558.b3dm"}}}