{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x5596b1fdc9197460b6d452054d1085384bde5f23ec02205dda95fb0fcee9d0ce",
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    "signer": "0xF5a4f8fCD6d35F4AF037631D92a627E42c6B9BF1",
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}