{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x873b1fc4918de0f1a9040386c8ed8448023294be3888ca195395e948eab4e703",
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    "signer": "0x3c3cf888a82Cd7dC4d4C2a922a11941DD6650657",
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  }
}