{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xa07f58dbf223a869e2d9c1db1acebee09aa4b16bff080c178ebfa1e95a347139",
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    "signer": "0xb28364c7aB5aCF2581E0393523366f863e6d6045",
    "userId": "861926668"
  }
}