{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xa436f23166f95029088ed3e1f48e0a146090e664de77730cd2bb73d55b665c75",
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    "signer": "0x97f8de6d265F0eA151d3722a055B3c3E5A6B227f",
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}