{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "194577",
    "entityType": "User",
    "nonce": "0x5ace72c8f8adcc1e9527e6d7876af6257059756b476ea5462318fb1a00ef02cb",
    "signature": "0xc254c315d50be0e4968be9499c481d7b32cea5f20d769d93dabc9688919acda43e485eebb5760c0178dee1085f49278514cffd8ece45070651458ed3019843b11c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}