{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xb8453fbb3e1a59c3d00f8b46a46e0850cc90dbdf33415ee7f52520cd64752ade",
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    "signer": "0x603B62D40E6CcfEC7d4D7f6FFB2adc1091Fc9E8b",
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  }
}