{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xb3cd5515189c8a7b5ba4fa22b5906b02740d65321035783a416c0e110a09e09f",
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    "signer": "0xb7BB9AC64c0894fe13EA9711c7Dc8C3A4e54A88e",
    "userId": "654099762"
  }
}