{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949478,-0.313834,0.000000,0.000000,0.175449,-0.530807,0.829133,0.000000,-0.259662,0.785585,0.561633,0.000000,-1657913.114532,5015867.289905,3561955.011252,1],    "boundingVolume": {    "region": [1.889976,0.596317,1.890075,0.596399,0.000000,10.281829]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/13_1338230.b3dm"}}}