{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1dc372a0c89a2de16cbaedd51c08ddf6e2f39766d323e29ae73187fcb51f6a32",
    "signature": "0x57be53a3759e9ee1f9fff6a4b5c4cbe88d8ff7b17ba2a8e9860d720b8159ae101ca389e5bd93485d72c31c47474f29f35747cbb18dfd6af2cf9b39199116ef681c",
    "signer": "0x262FfE6368E86674bFd32404757f3A8B1a189F85",
    "userId": "664900058"
  }
}