{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x12ba24eaa3b41deace0f548a34bab0726e2ec8e9eac4804aa61f5d273999cec0",
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    "signer": "0x21A523F1287c3c66Bb357832a7d8b2b5E3773325",
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  }
}