{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x5f155fd66b474c054d90c738de9daef8ea4648890317da2e26d39eee7ed2b849",
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    "signer": "0xa83d4ac0066b45ecD1C1F35823505184E4Eab23a",
    "userId": "628005908"
  }
}