{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x652380dbc01e22a1f70059e1876e80fa328620349216cc39462f3263a3774a0b",
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    "signer": "0x8fE23580516ef5596006BBc1541D2dCab23bCE56",
    "userId": "383246485"
  }
}