{
  "manageEntity": {
    "action": "Save",
    "entityId": "406057964",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x9b7ff9dafff25849ea175796b8d777a93242aa4f9e597a8fa82ca49f53881fbd",
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    "signer": "0x63EbE5a1B5C5F156330BDf810f5fFf6A224c75c8",
    "userId": "309080"
  }
}