{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "340717612",
    "entityType": "User",
    "nonce": "0xeb81b9452201b7ea3851502e76ea9bcb9cff8ab55d0547852b75e36ac8116d4c",
    "signature": "0xfd35d208e2d613f45b251c9ec9570b484aa9d337f8d0b2634498adf560c37fe70a3bf1ef3c49d8bf1708bfae2cfab87724e84051f8587e6b7d7b290f10eb96aa1b",
    "signer": "0xdEc12eC3F7972dB51907501aF18eb17FBa37a413",
    "userId": "211416595"
  }
}