{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x92fbbeb408f02edc39709d4ad64e3cfb8b91c97e64e8dba8b08143291484aa0f",
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    "signer": "0x3442AB72e308dE3423378325479b2A0b71413435",
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  }
}