{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "428192787",
    "entityType": "User",
    "nonce": "0x28853f3484edcf386c9770257a6470f00f497e0c793d716364b37c3b8bf0dbc9",
    "signature": "0x53c8c9a0bbbc612aa2f5a5b31bf8600f614f2edcf67ac662cf25c8a2be831f6052291e4294180c4c1d2833daa050fd4b0f01b7130e3aa9942df662c8093d7b901b",
    "signer": "0xf76Be3e57D30ebb176cA7D31f49157c7f56E6b0D",
    "userId": "204302128"
  }
}