{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xc1f5db96e1ba39238f39d5b308b0e1006242bfd958e6a6339fe06f3a80806f20",
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    "signer": "0x0c8F5987B6aD7acB4F693DE929017e08B1512969",
    "userId": "705280327"
  }
}