{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x6d3e4c42be50f7a4bbfd70c422e8c7168e0e5d4a7374d0fac1eb03ef93c342c5",
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    "signer": "0x05dFbB4a0596bb4528E30DD78a528f34e09DcAc8",
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  }
}