{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x61a28c740ab597739d461ef3d72127a483b4c777971e7e851a6c82c338d7f43d",
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    "signer": "0x2C8Bde4793d71DD6747759CCdF448f4C7b08DB57",
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  }
}