{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x02a9edfd4114c79d668917f401c9524b3705562a3b518c367b1c2bca920e15ac",
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    "signer": "0xA3f113472915b2f3E2ABdEb83ceAFec10dD6eFf7",
    "userId": "925577169"
  }
}