{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "21234",
    "entityType": "User",
    "nonce": "0x07a6be02f251650de1565c5f9354f784fefc0103681d87843108076efa0c1426",
    "signature": "0x152623dba74607b61b6901ae8b36de031332d8ac0e6f0c2fd426a6d33a933449033a98ee9b2de4f97570d191a7e065b152d13edfae48a5f69058440bb73bf4b01c",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}