{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xa6a21d2590f3280cc5e4d734ccecf13d077779efe44474c9a8a80881ea505413",
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    "signer": "0xeDfBE8692224c4fE2951E97418044B5aFE3087e9",
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  }
}