{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2194",
    "entityType": "User",
    "nonce": "0x635452b770c000f34ee0224dc8fc08691eeba90e8f3b075b90a54186a717aa61",
    "signature": "0x9cd3781ee23fb677f74838011dbcb08ee4a7899e27e76e6874b444f0b5fbb6302dfc0b514ae036e7163fda78fa1665b428c9aa9a65e342f00bcc44d38dba1f531c",
    "signer": "0x674FFC02F71bdD4bD3Ae60c618579EBDD541E397",
    "userId": "787787230"
  }
}