{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x828f93291288cb48019eae58be3a1f0ffa6037c293bef54f72baa828f03eddaf",
    "signature": "0x58ceab802570bf074f4f548dd4bcfc04243c97e81697229ae54e76f3045be6a77c2be841746c067a85250daa5a3c72b50106d4ceed786b3f54bbf33dff90fb391c",
    "signer": "0xB8CBa3Dd20819797F5ebc206b56BCb5E5C34eB34",
    "userId": "31229562"
  }
}