{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x5576adab01ea095a8d9d4654ce920755cf510bb395eb41c9a8828b3256d54913",
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    "signer": "0x686Bc6B6feE40A52Be47899175f284eECD2aaB62",
    "userId": "416057557"
  }
}