{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x544c6789f2788184ce07f500e0d19aaa70bf91a8d2e89b174f104a1a75f3974b",
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    "signer": "0xdC6C02D1F5CDbf4915a3761B36704C517141556c",
    "userId": "395976655"
  }
}