{
  "manageEntity": {
    "action": "Save",
    "entityId": "699770856",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xc4f8a2e7c505a99a2fd401c2906edb8d99769672f4c1835b5026468223aee864",
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    "signer": "0xaFdEC27229de1023f5322f4Dbf0e874dC548011F",
    "userId": "817564020"
  }
}