{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x9f9114d99351310c3c82476a36c7355782b9925419c89205f101816a55890a95",
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    "signer": "0xE60E759A9F8Cd424a8C526810b53C8C164CeBd3B",
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}