{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "174400",
    "entityType": "User",
    "nonce": "0xb8724500aad2450dad29b9d9e64f9265347a1c92c148444849a0905ab7c4cda3",
    "signature": "0xd9f6c316c997961a246cbabdf8459ed5af2eed6f7f0f065240e257cbf0f8052a5d540372ed07076ff672b10a657056e08b827b13df61b981b9d3bc65bf21fdc01b",
    "signer": "0x793bbEFbb3Cf1e6529B90296e502145aCcCDE8d6",
    "userId": "838777725"
  }
}