{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1489",
    "entityType": "User",
    "nonce": "0x91b88d0f25d234271418bdc737980543793d8e04fbd4711c29492b453235f74b",
    "signature": "0xb5515fc497c7fa04f7e886a6cbeb2c1326718625c45eb17685c76b008404581f4c46694956f8ad3eeb8cff67264da25215e54c029159e5cd01b8a4c41d791bdf1b",
    "signer": "0x7451Cf52e883bc4483b88591c194dc3942E7F191",
    "userId": "584186978"
  }
}