{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950500,-0.310723,0.000000,0.000000,0.173924,-0.532032,0.828669,0.000000,-0.256943,0.785987,0.562321,0.000000,-1640555.388525,5018447.867778,3566324.880053,1],    "boundingVolume": {    "region": [1.886701,0.597140,1.886799,0.597239,0.000000,8.662907]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/12_1384531.b3dm"}}}