{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "624459316",
    "entityType": "User",
    "nonce": "0x5f3492fa2106404d7f751bd39417f53d893abcbebe78582eeb23bebe02489778",
    "signature": "0x83f7035e2ba1344f072c4524386fe8d0a8be7d6baa861a9262fdb32692056d5b708430b33af6db3f75a80d53daedf718344f3aa3c525766a1ef251cd1876c4b01b",
    "signer": "0x9765cbE8e26a2c6c4847C1B69ABeB0B5250EC254",
    "userId": "678556080"
  }
}