{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "111210",
    "entityType": "User",
    "nonce": "0x4012e48a705e2f4f1ba73da233b0e21309843a8c6b80284435fe1df3d1ef4e91",
    "signature": "0x5817f2d8f3a8ed6fcbfab068bd9dfe7a861b9384f66f319f28adc6f6375932407b6380122ff07c3c65f186f4995560c7351d6668d578b07e0bd0f9c9507e57e31b",
    "signer": "0x75a075dd45bE38AA2c27754D97d5d84dD624FeA5",
    "userId": "451351"
  }
}