{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x42a3e8ce5e3514a675c84474d8cf368e8be9f2e497f3c46b2fa3b5c57d8ba403",
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    "signer": "0xCE9ca624422b724D086Ad4665A4F57e57cf8797f",
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}