{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xf6ba21bdaec92fef4eabf012c49f30aa3135d0e2a79f43d6fd3c7b996d0dbfbf",
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    "signer": "0xa5Aa26116520A634A6dBeADC3A5e8cBa8b354C24",
    "userId": "479857316"
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}