{
  "manageEntity": {
    "action": "Save",
    "entityId": "848752578",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x0b7d562afb690f8b844e4a4e5b80d64f33ec623a89377e9a76f4facec6a8c5cf",
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    "signer": "0xaFdEC27229de1023f5322f4Dbf0e874dC548011F",
    "userId": "817564020"
  }
}