{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x9f1628e73ee808b6e6c4517e68961e88651cd3fb06654ce2fc74cc4d9bb15b3b",
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    "signer": "0xce0c9C40e8bAf81Dfe84A8a6c556f0832b0b992D",
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  }
}