{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xa346fb6fd3fa2baad8e9e7b4a7a2b5e7fe6ec798f44631f2d470c2d4eab3eabf",
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    "signer": "0x648641b8343AC9819Ae81C3f57D5364689163C83",
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  }
}