{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xec80b5bf638ff106a0eafc0eb3248674304c4a7067914a5734904d71542e962c",
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    "signer": "0x010890739ee5EEA7A578C39f150C929028b07F2d",
    "userId": "240058941"
  }
}