{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x6795601c7a610af36c5440e51c48af78319fb93239efc02e766ed74c3367d390",
    "signature": "0xef4f7581381bd8c50bed80899efd9429e1de9fa8301a747f17853578e67e3f7a6d1bda6e7dd80d4bca3c851d7b19f8f15714e85a3eb22508ae70bf9cf9b9bca51b",
    "signer": "0x49aCa476D46A8DeCd8789B82a5E5c05d36dF4FdE",
    "userId": "305528134"
  }
}