{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x4c1555283c6e1dc5a2c4694ca1b17f440990769538d145b083f02ea3a2e2fb88",
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    "signer": "0xaeea4881a0dEb0589a66aD6A4A894BC6F75603DA",
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  }
}