{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "881446128",
    "entityType": "User",
    "nonce": "0x5fc44ce81b5b6a104eccac44c0c79a0cebde239de16ef8cfbe168fc40d9dbe99",
    "signature": "0xdf427f686d3781a4fd7e4e88cb20d5a612921aed23af29dc59ed7e14922b37e7565fe1519cc26bec478a39d8ae8d1261baabd0538fe18d32194aca3ac05ac38e1b",
    "signer": "0x3d3C9a78785e201CD119b8f74d7d88D131bB3cb9",
    "userId": "350266629"
  }
}