{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb6078d655ae84278e09c70f4024b34fcbe15f1915a8b2df35d4b645b40fac572",
    "signature": "0x73922b2ed3e35eb75a60a3c73e2f7b03e7be582c0270aef36c35b006b05f19702253fcc197d644c7911bc5ec026d882cd5e9a01da9f5c1b5a79cd8e7d9c09f161b",
    "signer": "0x4ABf9A66a3AFeBa2CCD607dC639F2C9b05B67eF7",
    "userId": "590628208"
  }
}