{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949139,-0.314858,0.000000,0.000000,0.116003,-0.349692,0.929655,0.000000,-0.292441,0.881563,0.370574,0.000000,-1866088.865187,5625315.249623,2348827.482082,1],    "boundingVolume": {    "region": [1.891050,0.379569,1.891158,0.379684,0.000000,52.732610]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/5/15/18_74873.b3dm"}}}