{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950392,-0.311053,0.000000,0.000000,0.173969,-0.531546,0.828972,0.000000,-0.257311,0.786187,0.561873,0.000000,-1642898.902668,5019716.028576,3563479.346670,1],    "boundingVolume": {    "region": [1.887048,0.596599,1.887146,0.596698,0.000000,8.795997]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/12/6_1393834.b3dm"}}}