{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x19624fbb6d9b5a9c68f55341b3c1cdfba40a137ca8725a7639cd011e1c3bf705",
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    "signer": "0x4FaD35028E4C3973A994Bc61d52FD54DDCDf0353",
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  }
}