{
  "manageEntity": {
    "action": "Save",
    "entityId": "1346774479",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x5352d2aa336139a49f32757e05ed02f80627b929627ea24a1b53ed5d1a26f1e3",
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    "signer": "0x7b52e6AA15Db4Fc3A84AFF2b12e5B8B128eA8610",
    "userId": "808512351"
  }
}