{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.857934,-0.513760,0.000000,0.000000,0.263010,-0.439203,0.859027,0.000000,-0.440553,0.735685,0.514470,0.000000,-2812402.377813,4696465.453758,3262286.242183,1],    "boundingVolume": {    "region": [2.110276,0.540327,2.110440,0.540452,0.000000,45.202033]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/12/7_390878.b3dm"}}}