{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x9c7fe72ca448665332300c146f76747674fd405e2f60f2cb263d879773fec1c6",
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    "signer": "0x19ef6E9dD868c3BcB9b5cab88E7D09219656577e",
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}