{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x3c0d5dba2b8aa161b4bb000d760cc05fc383ec18ffe33c662db4903dc8d6c00e",
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    "signer": "0x50D43616b96379147EcE96Eb46A34f4CC5c0D674",
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}