{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x5075109d05502a5443598d7eef5273a233cdc59698747623ca7213165c1ab604",
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    "signer": "0xDB1529DAEb2cB5c0C5d2dEA55094A5c58c08df37",
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  }
}