{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "146510",
    "entityType": "User",
    "nonce": "0xa4ec98f433349c5a778add6f28f4951358cc34d57612f8fa550674defcf5ecbd",
    "signature": "0x19c91fc644bdb81de3656d38c61ff4337bd53cefe341a17d6c2f7a2c865ae851389a6cce2d783cfd26fd0fa8e74493810d6cc3271350aff46ee033b255e257711c",
    "signer": "0x745895918A1926af8a7B4C34Af51BdF98bf5C7C8",
    "userId": "54958731"
  }
}