{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1104",
    "entityType": "User",
    "nonce": "0x04a21c293cbcf49153a1a2571adf7c9e894f10f7d30ad5436eb07d2fcc4eaeab",
    "signature": "0x0bef677d48d89cdfbe56407e624125ed560e91c041eda8b18db6bffa78182e7e27be85f4e935dc838959383ac252df6c1caf92595d177ef6c95f7f0b6e7b28db1b",
    "signer": "0xb15d7053c985Edf1d74fFc9893ab67Fdc2B33090",
    "userId": "211545300"
  }
}