{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x8e355f223862f8ed35a2fdc4d98575e7b1cc22f50d4df1c4da677d202bfa6c37",
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    "signer": "0x31fdBb0E5a7aAAe160b470d8DC722F86D8fDA857",
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}