{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x95397818f510e90daa6105cc6577367f8a8f263013eab00744c64995e8241ccf",
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    "signer": "0xEEeA1b981331a4d6346bf1a1f9e7557FC1c6cd05",
    "userId": "424296443"
  }
}