{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "912230388",
    "entityType": "User",
    "nonce": "0x030ac713d18f4079f5fe530e2f128017a2716535b16f37fcbead1a6b13520c5f",
    "signature": "0x3c4c4637fcc1054862c0cf4db0f63d2686301302e81551ef5e1fc0029de71363352ff7f9c17771574c590bbdc031ad56868a5ff40d3e60becb9fd22dc017834a1c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}