{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x5acde4aa3f1a61178afa88f93ee27062ba4bebca47de973e292d85e19a4824ec",
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    "signer": "0x223D5f51f92558c8Ff07CEe4Fd5478570Ea071cc",
    "userId": "486317678"
  }
}