{"asset": {        "version": "0.0",        "gltfUpAxis": "Y"    },    "geometricError":100.000000,"root": {        "transform": [-0.950518,-0.310670,0.000000,0.000000,0.173756,-0.531620,0.828969,0.000000,-0.256993,0.786288,0.561877,0.000000,-1640869.801853,5020362.156336,3563503.865714,1],    "boundingVolume": {    "region": [1.886645,0.596603,1.886743,0.596702,0.000000,14.464368]},"geometricError": 100.000000,        "refine": "REPLACE",        "content": {        "uri": "./tile/4/7/7_1393961.b3dm"}}}