{
  "manageEntity": {
    "action": "Save",
    "entityId": "420242680",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x638c05a197518e602c124b4ca56dd8321829474502163d1cb22e146fc1447604",
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    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
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  }
}