{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe3771dba3ede521084a9bbb09cbae3e332f75cc302a57c55d5701079addca451",
    "signature": "0x73f3159ef8a554e9b6392a15111016270d58e2106521870adea79c434945bf5e511771fbf876d2239c60ed3f121c73f0744e3a1d384d66ede57bdf8ba193c58e1b",
    "signer": "0x49F25c2F241269A57684B199d22800Ec4c0f9d57",
    "userId": "573942843"
  }
}