{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xdd438d8686fc5fddc743521a068c5ddddb536c14ac399398ccc06cf852210d2e",
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    "signer": "0xe7c3A8b57D5E123621e7EC38D44ff443b172E8Bc",
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  }
}