{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x12986c39fe0c338e4b0f835e7262da26a9394f84712484dbddf84d6f2ab9fa5c",
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    "signer": "0x8141F8cFCc12f88E3a24549a825Fd1Ae77fB7e00",
    "userId": "214033353"
  }
}