{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949113,-0.314936,0.000000,0.000000,0.116103,-0.349896,0.929566,0.000000,-0.292485,0.881454,0.370799,0.000000,-1866367.388957,5624620.799087,2350259.165759,1],    "boundingVolume": {    "region": [1.891131,0.379812,1.891239,0.379927,0.000000,72.367680]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/15/21_77366.b3dm"}}}