{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x7959f9b17781e8e38ccf1d9aa95b6bb70765288858ba1a6cb4de47ca3316633a",
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    "signer": "0xDC694F1F7183a48e97770A7C23Dc4fAe25EeabF0",
    "userId": "47751098"
  }
}