{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0xb0c17e1e4d2042f716439888fb8b032b5b1b46d01fedfd10aacdf576081a4537",
    "signature": "0x1bcbab4714dbb7cee982e7c4f73f03ba01c5d1f01085b2aff8a4297d0ab7e1f411bd08eb6cb977df13e1c3ca13ea8ab0ca1968d2faf604899f486c942b498bac1c",
    "signer": "0x6268f3F36E0fe8D3E139bC6d32d7539887721848",
    "userId": "418312750"
  }
}