{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.948738,-0.316063,0.000000,0.000000,0.176496,-0.529794,0.829558,0.000000,-0.261642,0.785379,0.561002,0.000000,-1670546.508725,5014541.989923,3557943.165298,1],    "boundingVolume": {    "region": [1.892325,0.595484,1.892421,0.595707,0.000000,8.473052]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/8/15_1146782.b3dm"}}}