{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.951827,-0.306637,0.000000,0.000000,0.112677,-0.349759,0.930039,0.000000,-0.284924,0.884429,0.369600,0.000000,-1818116.372763,5643587.447332,2342652.062540,1],    "boundingVolume": {    "region": [1.882372,0.378519,1.882536,0.378639,0.000000,12.243242]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/12_46476.b3dm"}}}