{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "307992",
    "entityType": "User",
    "nonce": "0xa8b5e80771cdce2645ad0cebdfa1867c09037a883c922bdc81dc8e19204a309f",
    "signature": "0xe41ed4ac4d67bf0fa447e2573682b320fbd6a999c33c7240b9f1199a5bddd22a41e522994ad4e07121df37491652a8a1b9be2499caced9776cdb3cbc6c02fd6a1b",
    "signer": "0x3e16afFf69eC32202c1B755Ad919C7aA325B7aBE",
    "userId": "902811065"
  }
}