{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "142213354",
    "entityType": "User",
    "nonce": "0xb02efb3c90ba76c67aa20b947a8b1c2ee4ff929b311c5bf65b248271ed1797d8",
    "signature": "0x9ff4e7fe4a4e45e51624a80104d912513e14d629427d81beb7713d9a54ad8c7e38b403ae884fc2a39e7d25d2fd0e5ef027d33762c6342e51373049328f1395ce1b",
    "signer": "0xd489B786708CDd8661b152CFF27695dC12c8c0C9",
    "userId": "647391197"
  }
}