{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x3a9a3ae4bb87c79782313266a745a457355f05294401441ced79861d73ec4a79",
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    "signer": "0xfB6436C438F897b7eA739876B4Cfcca832868820",
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  }
}