{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x33a16b9a8ac936fa458dbd74eefb1d63399032769046f3607835ca0b9ceed14b",
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    "signer": "0xEb133bF66214f7Ee19c7b8D17D6565367c7DA268",
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}