{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xb218d6beb939b794d68a943825ed3985b7a0b3b1394e8fffddbda641b77a20e5",
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    "signer": "0xfa60C9b08a5Aca204F9c509Fd51FEdb4F4aA13f1",
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  }
}