{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x69546542ab372ac4471bd7d846eace95c0e5f828832a3317837a1933cef44536",
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    "signer": "0x531fD734Bc4CA4FcCA203a3E7e2f564BE7861188",
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  }
}