{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x387410bde4356e1ad8345519176a24237d9648bb58034f3ccccf57b60e9a5908",
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    "signer": "0x376F8aABFbEA5892b16eeFf35C8504520846f157",
    "userId": "45556078"
  }
}