{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x6397535b1a4b680a238f54bfabc4fd578398938ff2adc6269e26268083e50b73",
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    "signer": "0x04655Cc6cB74e91329e8A92d8306E3d5147DD054",
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}