{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950432,-0.310934,0.000000,0.000000,0.114409,-0.349713,0.929845,0.000000,-0.288856,0.882946,0.370093,0.000000,-1843206.245569,5634134.187810,2345776.856525,1],    "boundingVolume": {    "region": [1.886897,0.379070,1.887046,0.379148,0.000000,28.799661]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/21/15_4356.b3dm"}}}