{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "90831",
    "entityType": "User",
    "nonce": "0x37bcf98d186e77b722b3ea9095611acf3e8170310c7b410508716e9742798102",
    "signature": "0x2584bc41b0162d51c6e02cf0510ae8d86d35041228eb428d5502335992c53a1728419a9aada9db1dcc3545f608bec1fe6735ffaf0bb1115a15850d29a57297901b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}