{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "593684426",
    "entityType": "User",
    "nonce": "0xf094a910743d121936c7b1661049d24c2069ff5de132fc3a4c7b92ef337c991e",
    "signature": "0x51bf76197ff28f5b71ad0113256f41442d0cfa255dcd8505c36f1341d454bd991f923a17bf3726237897a36c3fa0adafc94875f318f749c28284f1aa4d9a68781b",
    "signer": "0xAD70397544Ee4e82a6AB7EA8365282a449a99DBD",
    "userId": "640375784"
  }
}