{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xe41a5e216ef8fe7740c000026b7c1955e16f18f65cad7bddf55b0e692fe1037f",
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    "signer": "0xFc32c4a1d5F00e4c3A665bae88f3a63d47BAEa43",
    "userId": "397129323"
  }
}