{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xd12ba7ff5e9037ec568a2657a848b419c5297053a38eaa85faeffb6cda58af8a",
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    "signer": "0x4e04Cb9Ae43CA7d8B56d4BdaA7676dB0222c2a89",
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  }
}