{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x456f9ba1d82632e0a0eb219a3473e044ade0affd0ab75bd11880e0b9cfdc52c2",
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    "signer": "0x27609BC626925Ca7Ad67E81Cc93873144a9A2d7F",
    "userId": "372512426"
  }
}