{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950556,-0.310554,0.000000,0.000000,0.173675,-0.531593,0.829003,0.000000,-0.256907,0.786352,0.561826,0.000000,-1640322.488925,5020771.301865,3563181.560831,1],    "boundingVolume": {    "region": [1.886523,0.596542,1.886620,0.596641,0.000000,12.847205]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/6_1391981.b3dm"}}}