{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0x1500a8946e27407bb31fc7759f9141af554277baf86a0c72cde47a01fc936293",
    "signature": "0x1319899a4937f64ab19ed1d643a1b3b795b17bbbd204de8890bbd32914bf88a7519d4d3a5c9ad51dcfdea99d3ab24163fba67b4e79832ae6205e7bc221bab30f1b",
    "signer": "0xE46065A6FfBA098285D7bDAF191AB891Ab19085c",
    "userId": "247933491"
  }
}