{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x489ca74ff63dcefa304f15758b83524cea8337c19887c605ef07002164d686a8",
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    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
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  }
}