{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x4df95795107c0675dd9ed8487fc742353942bfcf83daa2be9ca01b99b1b3a8c6",
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    "signer": "0x233d1Bef497eC47C80AB07e9229CFf45268c649C",
    "userId": "506861371"
  }
}