{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x44a06a0dfe012580cd3cfcc9ad7c7a22606d72ecece56234053d6fce0d76ce7d",
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    "signer": "0x8Bb8fa95906668B2302B27e50860464EDe04Eb74",
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  }
}