{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x563012a651e775b79514121eb21fd6c5212fcb723881b5fbd27304258736fae6",
    "signature": "0xc66b63562cdd9dee8232c730f2e0b6c6637a2423bcac85e660ed49c38db6888e11df07d55035d7fa8b3acc2bfc3645c075fa02450ef7aa288f6fd16c935e50291b",
    "signer": "0x0E71C12c426F5C9206F778713f48B60477CA943b",
    "userId": "29088079"
  }
}