{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "143331",
    "entityType": "User",
    "nonce": "0x2556ed3918c995bc40c3396ee1c49e421a054f2e535883ee5396310e8a5f684f",
    "signature": "0x7184a8909adb35da5683933fc5bff4ef880f75e11cfbf739ea0e60dba4d3ecd240273781c4fb5e2152ad3a1a55ce1d75a832fe907e1382ed519353ba63b34e841c",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}