{
  "manageEntity": {
    "action": "Save",
    "entityId": "1823217054",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xb5584f228bc21903deda6c187d186dbbedd34b8558fd4c653b9f151f519c678a",
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    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}