{
  "manageEntity": {
    "action": "Save",
    "entityId": "1494106839",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x7122c14a009a50faebf957d2290c34c858aa809020130426260b66c6ce1a17a9",
    "signature": "0x64f32d9e618713db1d0bb94e23de818cf1aeb00e37494c38c45f0ae97a60cf2141afc38323504ad530e689df668c5c6f4281cb154a8fe7b1a05274848948fc561b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}