{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xdea6a1f2cb931b014ae850b8a59518e572098bc3f037259deeab415e50da1477",
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    "signer": "0xaB1AdbeaFF5f057Fc45F7856dD79a543b5b52e34",
    "userId": "821211738"
  }
}