{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x664760020f8ccf118a53d0d08ef231a81b01ea3697c5e12827ab15e86ba7054c",
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    "signer": "0xeDD950aEd4449FACC7ecE9df1c31be536A0b4E50",
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  }
}