{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xd74500e803073167e14adfb3a2ea10acf39c3ec25bea3b1fb2c587055c07af41",
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    "signer": "0xdc13E26540047CCB9c3E2F99b9ff2b7DCd0Da018",
    "userId": "350077186"
  }
}