{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x353014898b9f7fc8051288cad278584b6d5b1c0ee1e75c8f2afff62843239a64",
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    "signer": "0xf03E2eb658f4057Ea4255CF34BcE6009938B86f6",
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  }
}