{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x37710b6b302b8533f5abd7e8a7c63b495fbd23cbc79fff39754c8a4a8fdd77b2",
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    "signer": "0x1E690f8e14A0D63a4b444c3bf7f582f98FB18b36",
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}