{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xc9af912d6ef05b00ecccc71a4061461f3948669abfa137736625559508a3e8c5",
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    "signer": "0x959E77fd3111DCcD7a141B901a15550e83B49F40",
    "userId": "122480393"
  }
}