{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xff841de5510d9c6aaae8ebb0383f0dffc2720eb4fc5206311b630557590497da",
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    "signer": "0xF1ed2B95cE14963a5EF94E70979E123e2Dd9aeAa",
    "userId": "843902893"
  }
}