{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x82b9374c5e135eb82061fad70791e862cf0f4a5460f6425da6cbb17acf47b51a",
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    "signer": "0x1265314B015c9985CDBDD5e458c4648EE6d6A387",
    "userId": "828737354"
  }
}