{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xe0302551a55abebe2d4a84b22f8bba6f2f94b5c0827aacea3f516a17a59a3603",
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    "signer": "0x0C88bb0Fe1585e94f57A7EE989BeF92B92cb501f",
    "userId": "561298785"
  }
}