{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "49557",
    "entityType": "User",
    "nonce": "0x69570c904032bebf7f5f4683e93bdd841b7e2e4d93b03ea350e6faf15d2654d5",
    "signature": "0xa4c8a5e7b2d0ace37f5bed8abeae96d506a646f5029155b6eff02e3cd3b9dcc23e1b7d8d8e98e213a9dacd426d26ae0a842d52fd1e89f1f28b4f03526e132dcf1c",
    "signer": "0x4ad870a0C318214b4796d1464BC8Dc57C6b84C12",
    "userId": "408505072"
  }
}