{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950348,-0.311188,0.000000,0.000000,0.173801,-0.530777,0.829500,0.000000,-0.257587,0.786656,0.561089,0.000000,-1644661.170308,5022695.419760,3558498.321376,1],    "boundingVolume": {    "region": [1.887189,0.595643,1.887289,0.595759,0.000000,8.763194]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/6/12_1428602.b3dm"}}}