{
  "manageEntity": {
    "action": "Save",
    "entityId": "2131211353",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x86ddde231c14904b295a2e0ad7fdd78dd58f6c27dfd989ad1decaaf73b31f98a",
    "signature": "0x048719dac0c74f0bd15ccb79d02fcb0dc8cac5997b47ba9300a79a398d97abe5705717feb5bc25ac1d66e27eacbebb2947aa36eac34a78e89df9ed9b70db63261c",
    "signer": "0x796D60E9fE921C82Ef20f6329e27dD246392f542",
    "userId": "809803"
  }
}