{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x5d9c22b615632beb60324cf725c66549608248b10df741ba44fd99c045f5c96c",
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    "signer": "0x233aC82efF8a230FE6931641939fFF7F353ca762",
    "userId": "986654331"
  }
}