{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xb17be920e4554f97d3ae2fa32778591a36973415dbdcb98a5c7fe059aa9ce1c2",
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    "signer": "0x5358D1b8617d1c62158a7a194de4471cc0fbBC79",
    "userId": "630358397"
  }
}