{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x670be51d3a6125acae8aa79a379db00f9677c4a20ef8d659d320fab531d642c2",
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    "signer": "0x7b8621A65C6FD0422223367A535BB694317A7cda",
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  }
}