{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x2f00597a83059097fb5c19e17da7696ad8ca697e39fb06d4b5ac0e91204b06c3",
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    "signer": "0xF9AA788465BE0DAD7548162aC3CD4F9805d96e6D",
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}