{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x8a052fba98ca1d1251689e41ceef83d41ce8776ca82375f74f1da42a35bf094b",
    "signature": "0xa31e994ee6886c205a72c493f2e2324874fc48e5ecb334d37199a3970444206b3f87c63f40cc854de0d7ef8924eada10da8fc2e123f63a53d303b8d585b7e15e1b",
    "signer": "0xe1eAe9Fa3Fef187944BA6cBa5C534e1ea257CA4E",
    "userId": "344552512"
  }
}