{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.944346,-0.328954,0.000000,0.000000,0.184079,-0.528446,0.828770,0.000000,-0.272051,0.780994,0.562171,0.000000,-1737020.164706,4986563.636792,3565375.688501,1],    "boundingVolume": {    "region": [1.905948,0.596996,1.906035,0.597022,0.000000,8.765044]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/15.b3dm"}}}