{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "335443",
    "entityType": "User",
    "nonce": "0x17be8dce073f97a69ec538a99616f7a468f7a0479e9fb44eaf0b98097f03feec",
    "signature": "0x05c679c2d2d9b3698289f0ee0dd1fe76d42470d3728799cac57ded7ec2b81483050dbf00982e45310a552686091ff98bc5e3d490fabfa846e66e4c9f50a3ca7a1c",
    "signer": "0x73C69e0c0a50f0E228106C863e362C350a86Af87",
    "userId": "190031"
  }
}