{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x08459be75e36b77b82e035cfdbc1cd09f286e5f4974c24ef12c592703c884792",
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    "signer": "0x2cA6959EB4081FdF36aAd22758bf3f9a6939f6ca",
    "userId": "827796955"
  }
}