{
  "manageEntity": {
    "action": "Save",
    "entityId": "60859",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x1776b3263320171e7c2589052f8b28e4dcc1f55521beed8f8c904dfdf3d2c9e5",
    "signature": "0x6092dbb80cfb7cf83c53724733da8dccd9f32f010ac692a9ea747f2b03d95a88740cdf15ae0c142ee681eb8cd5b615721283a002c45e8dec5bd65447096cb1c01c",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}