{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xcc04009826009bbe72c9ef5a8bc1be6e51e7a71d988383153f985b4429977aa7",
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    "signer": "0x55835e6019b5eC353c0B4081FbEfC20c7d8832D5",
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}