{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0xb1a08fa482bd31932e4e7e8460721f8503d1d3d6be45f05a52e45f9f574c6955",
    "signature": "0xbb4a4b7dfeabeefac2864a9431d8fd86c72fe7eb8ae710ab7ababc6a275e3ac5683b963df95e4d750e07b2e84467e10edce772c0e413d1622f32926a2ac4acd91b",
    "signer": "0xa4A8a4853051b18e0f0f777693Ce34CF4bCe9385",
    "userId": "634886384"
  }
}