{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x5f5861421103086878781a063d648f6e45fc57ff0c5693c1c52ed2f58f4b42c6",
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    "signer": "0x704653bB668e896c8DDd4eC5c2D37760788E2c1D",
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  }
}