{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x8957c22d591b6eda20374fa87cc780eaedf577f746fb0bcd04a6b112e9f89ffe",
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    "signer": "0x155d63D8364e0ce505378329e1d95d15A5B09f72",
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  }
}