{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x1d593c1967dc0ff57d5178222e30c23d14d8931bc806a4ccf6a360cc11556b70",
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    "signer": "0x45139c1C6839e2aDF4B40362f420859B5d4789e7",
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  }
}