{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "451691735",
    "entityType": "User",
    "nonce": "0x16253f483b38e8abba2308a2bf8182ed99cbe9bcd9c035a088d868dd38f1919a",
    "signature": "0x18e8706cedd72b4396aa283a43463035297f48c7ef903260d7e2e8bab2a3eadd1c644edbc9371a43dc4d283920804944724e1272761c99325c94a0372f00ad551c",
    "signer": "0x9b6bD4505e2bCfA88acc8680F463a96DAddf1d0d",
    "userId": "213208842"
  }
}