{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x6ea71fab1ed143ecc604be53fe94910e82c1d71965088470959b93b1d12f264d",
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    "signer": "0x580Aa7c985f7eEbd81267A7D6439f1da105410E8",
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  }
}