{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x3b8324b1468d29f960011132ff488047436d6f188bdb5dbb601883ed32fb77d4",
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    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
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  }
}