{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xc0800c27344591ae6e38ea084fa5a45808c4c7406fd227ba218fec89bdaa6abd",
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    "signer": "0x56581eb3E77E81fd456d0F89d5872c616859A859",
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  }
}