{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x051b80743d6600108ecfebce7aac4e8444db4b7280eb269e8f7f494555292f4a",
    "signature": "0x1f5fe054e36f3b7ba99d5e96063c31f1905fb316b0be15a07c45bd8971f64f8c5cb307b887d3a81baec70fb549765ae02c9e399346e0c775a4465bcd20a6170d1b",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}