{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949399,-0.314071,0.000000,0.000000,0.175221,-0.529672,0.829907,0.000000,-0.260103,0.786260,0.560483,0.000000,-1660719.773412,5020155.109747,3554648.647329,1],    "boundingVolume": {    "region": [1.890194,0.594837,1.890356,0.595102,0.000000,8.188368]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/12/12_1371973.b3dm"}}}