{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x69e4aa3c54cff5d3537f7e0f6418dfae14a596875668454d784d2c60e8fdfc0c",
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    "signer": "0x9F275c9428D777F66aaab794b3A3e453f57eF105",
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  }
}