{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x8c517c90fc626b2bf453f938360862aeeb2319862cb9b256074529ba7da787e3",
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    "signer": "0x5e750f0FDA2ef553d8dB7952bc515c5Ac0e728C6",
    "userId": "517242286"
  }
}