{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x7c392c268976cb6cab0f939a8d87d69dbea878170498764b10efe165c4e53221",
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    "signer": "0xEd03811A953FcFAf294E1B9B96338772B0AE76A5",
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  }
}