{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1657773",
    "entityType": "User",
    "nonce": "0x425fb06baffe7a23c6b50fedac1ee4e65c571b8a9e891169b14825b86a3351f9",
    "signature": "0x4425a31217e6e790a42a76cda2e3f43639029bb994293f4293131d497c93cd2b5b9a19652e3c1c37ce829ff70ae943a0abebe54acf915bf45409ece80e49ccce1c",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}