{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949574,-0.313543,0.000000,0.000000,0.115111,-0.348617,0.930170,0.000000,-0.291382,0.882461,0.369268,0.000000,-1859326.155201,5631029.040618,2340540.523930,1],    "boundingVolume": {    "region": [1.889634,0.378096,1.889802,0.378346,0.000000,4.460213]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/12_8993.b3dm"}}}