{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "940003920",
    "entityType": "User",
    "nonce": "0x66e5eda73504c7bc14036605ca305304290aaf433567d1524b6a7ce345c85c31",
    "signature": "0x395499f47fb5593f35436caa18a62493b96bf0ff66606cac2f4eda9a7771d9561a0807a713d1c5c63f373bc57818b69625afd60a1ca2bb77d9c80fe69658e2d31b",
    "signer": "0x4a4E686a6442e2Fc2495a7d4363B25c583Ea3c3a",
    "userId": "34815"
  }
}