{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xc680df344992e4d2f106fda73bf95a70e07fd6c2841ab3be2d71ef1879f7a6b4",
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    "signer": "0x3efCd9190037D66be28b556a91aBE8B324B94CD3",
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  }
}