{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xe55166fca1e2a2666f752e93ee214ba71ded8ebb65caec639a6e22966d7e0598",
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    "signer": "0x9C49F861e59a9EB6FB338b2DE88d9d80B6af617e",
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  }
}