{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950753,-0.309948,0.000000,0.000000,0.173150,-0.531132,0.829408,0.000000,-0.256533,0.786904,0.561225,0.000000,-1637929.103934,5024281.201176,3559358.836985,1],    "boundingVolume": {    "region": [1.885862,0.595755,1.886008,0.595974,0.000000,8.651848]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/15/12_1340038.b3dm"}}}