{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x76dbb8aed55a25f6ffb316e3aabfee059318d6c7a9d2090f5df76b82e8b34229",
    "signature": "0xc5cb852b2f24dadd88c7f34d4843f23a95b58b2841d87d6ff3974b5be6d205ab4800ed1b30eb643d1ad720ee62573b7677554a120e5c8f98f7a22dc8c4e34d871c",
    "signer": "0x5cF5222c093911F01AF2Dae6f993D120421f29b3",
    "userId": "740438126"
  }
}