{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950519,-0.310668,0.000000,0.000000,0.173698,-0.531446,0.829093,0.000000,-0.257029,0.786407,0.561693,0.000000,-1641102.870113,5021118.954581,3562337.925550,1],    "boundingVolume": {    "region": [1.886643,0.596382,1.886740,0.596480,0.000000,8.679983]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/4_1388985.b3dm"}}}