{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x8c6a2c6847510c87db50b4d9bbd41d1a6e10ff138ad569e444b8243d0e0f98b1",
    "signature": "0x2546785eb16d01132867b4dc5762cf568fbab5200a08c62092805ff0d3f7bb7c41073450e0321ea88addf6d17637d63b4aaa9600a4af2af7eb8e99a3030cfc5c1b",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}