{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949489,-0.313801,0.000000,0.000000,0.175407,-0.530740,0.829185,0.000000,-0.259651,0.785644,0.561556,0.000000,-1657842.140465,5016239.921192,3561466.552958,1],    "boundingVolume": {    "region": [1.889941,0.596225,1.890040,0.596306,0.000000,8.785490]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/12_1444230.b3dm"}}}