{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950867,-0.309598,0.000000,0.000000,0.173087,-0.531602,0.829120,0.000000,-0.256153,0.786722,0.561652,0.000000,-1635509.293020,5023129.160569,3562078.177503,1],    "boundingVolume": {    "region": [1.885494,0.596272,1.885640,0.596491,0.000000,8.806427]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/12/15_1324871.b3dm"}}}