{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.949572,-0.313548,0.000000,0.000000,0.114507,-0.346780,0.930930,0.000000,-0.291629,0.883190,0.367327,0.000000,-1860888.033291,5635650.139449,2328227.313238,1],    "boundingVolume": {    "region": [1.889639,0.376008,1.889808,0.376258,0.000000,19.900326]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/3_28665.b3dm"}}}