{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1468176",
    "entityType": "User",
    "nonce": "0x870251be5df550264cff4d4194f154dfe010805d3ca44f5497bd383fe01872a7",
    "signature": "0x831dc5822714447d647432b7d147975ec3554c4afd340e135ae7566da86fa2a76aa7f81abd1d47347aeee8b43a62a6a029d08e23b15f51d003ec62d0742a280c1b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}