{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "428192787",
    "entityType": "User",
    "nonce": "0xd40c3b04077cef7e3a0a818d52f1f2fa2c0b951fe89faebd85795c5970130745",
    "signature": "0x5e9df1193a7450e507e5756c49aecc9e61c90d10c5ab199d6d1cd39cb81a4b0f0f808e8e3a507cee9542d43f2e8cec34c8ff54969b03234dfd62a1ceee1d532b1b",
    "signer": "0xf76Be3e57D30ebb176cA7D31f49157c7f56E6b0D",
    "userId": "204302128"
  }
}