{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x72bf845da82266da9ef58e4714965f92164caa4d8d0bae2bd750bec52282c564",
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    "signer": "0x19aeE388f7964b65f4E881b15B7c800980e9aEd9",
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}