{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949482,-0.313821,0.000000,0.000000,0.175415,-0.530728,0.829191,0.000000,-0.259669,0.785644,0.561548,0.000000,-1657955.806072,5016241.515878,3561411.763214,1],    "boundingVolume": {    "region": [1.889961,0.596214,1.890060,0.596296,0.000000,8.785490]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/12_1444081.b3dm"}}}