{
  "manageEntity": {
    "action": "Save",
    "entityId": "75379",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x535db734f403b6a798212202be9cc2c349e5cf9cce4e72bbd1f4615b8963caaf",
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    "signer": "0xe07759002F950E60C71106A60a7c05Ce7F085171",
    "userId": "51433151"
  }
}