{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x8fff9a966d490bd274867efb5a37a3ddb52301517ae02f46d89580ae6d8da391",
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    "signer": "0xdF501506A06A1F2e8d9d06942da7814B8e245C2E",
    "userId": "759997042"
  }
}