{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xd70c61a2d39b291e365679d3003275f6846c473232cccb38c14281697cec6d88",
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    "signer": "0xb3168719A9181aDe0746f0F52D94015614eF5577",
    "userId": "409178654"
  }
}