{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4577290003a8bd8ae95319b6ab2da9aa30cd5647c914adf6187bcff2d3e4f051",
    "signature": "0x254051dcecb92c25bff35ec0643d6577357d34fe9c554f895ac543b496aef0393a1543e52d9947f142116aab950119c0022f9bee028ce3a6415b18990882c33e1c",
    "signer": "0x1bb42208903Bfbd2C21D8Bac98B8F0E6EcAF9d4F",
    "userId": "816328256"
  }
}