{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "648802251",
    "entityType": "User",
    "nonce": "0xb7819f10aeed1f0066dcf08698b2aad49ba157989a50f2bdae471d7d44e6ae8b",
    "signature": "0x93274228954dbe77365aa0ae72a1d26328fb8ff10ed6585564c9af0f0f6bd2d44a073662ee85af5a2046b81bd36302af955cfa9f546221335b1c15aa8a9dee741b",
    "signer": "0xAD614C578d791AA2538Fbfde30C97c8EFb69756d",
    "userId": "906447444"
  }
}