{
  "manageEntity": {
    "action": "Save",
    "entityId": "388629032",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x59f0e790adfba55a4939832b7da7cd98561f3c20e20b2b4250350e1116429f21",
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    "signer": "0xaFdEC27229de1023f5322f4Dbf0e874dC548011F",
    "userId": "817564020"
  }
}