{
  "manageEntity": {
    "action": "Save",
    "entityId": "1214825851",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x04f416d3385ae0f075273861c7b6397003012c39dd35ec611db6eb1637fe4516",
    "signature": "0x01076352758917a3de171ff02124cd44498d95a7200cb6c4ccb49eceeea4414d47acb979caee1401230ce0a09f4c11eafd522cc33bbd95e0d70710cb568127c31c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}