{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "995293503",
    "entityType": "User",
    "nonce": "0x3cc572ec0d7fb726cd6dcfa39ef1c3d2294960739bab41b1bcc1263778110cbf",
    "signature": "0x5519d7a5fc01a54978511b830e0431f45a588580bfa44c5d5123f69d8689eafb20453fd5d1b5915ba3ed9541108567120ecc3f394c68babf5f0a8385f60fbdc81c",
    "signer": "0xd489B786708CDd8661b152CFF27695dC12c8c0C9",
    "userId": "647391197"
  }
}