{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x0acaf5219021c2a2e431103fc137f4703a7d588c939e309a62a6c918d3a350a4",
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    "signer": "0xE7e8c0E26856500f9a7B3867f748D0c8b049B89d",
    "userId": "534084707"
  }
}