{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xfbc53968bec9cba2f1cfaf95f5ba2380a78b9643de30b42ecb077bdd76500305",
    "signature": "0xad779f0ebafec051b3c66685ef40631b1cbaed6329f1d8b2077669020f6a23357203756f509da90d9736bbd5507f8b535db0e72ae7be834177f50dfffcc7c48e1b",
    "signer": "0x603B62D40E6CcfEC7d4D7f6FFB2adc1091Fc9E8b",
    "userId": "62861578"
  }
}