{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x3b5132c3ddc10b8ef80f24ef77a080db727b4f68576cfd9ec81804d42d31ad6e",
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    "signer": "0xeB74eA7a3eb929695c60F6F235B55BFCfe57BA43",
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  }
}