{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.952346,-0.305019,0.000000,0.000000,0.113236,-0.353550,0.928536,0.000000,-0.282958,0.883465,0.373396,0.000000,-1805586.832890,5637492.744913,2366730.366677,1],    "boundingVolume": {    "region": [1.880705,0.382631,1.880805,0.382703,0.000000,4.775898]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/6/39/50_41954.b3dm"}}}