{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "400171089",
    "entityType": "User",
    "nonce": "0x250dffa23cc38dd7e6e414582950fd4efe45bd631ed07e4ca6aee0761eba33b3",
    "signature": "0x885633ba4aef8ba9b7d2f887887b18d4a98ce50bbf3b1bb199580ce70d9f6bc83f3e232757426fa9d63cf4e1bc0c780172d790010da4f460ed061e6ab9c6146f1b",
    "signer": "0xc8b59C26109BC380ABC47eBad3DF1FB7d6aBf13C",
    "userId": "37821039"
  }
}