{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "138135",
    "entityType": "User",
    "nonce": "0x77fc0538e283593fb3956debb0caed2372770e126e9659b72ad0f3b4e1fa6fe9",
    "signature": "0x66348abdbb0633dc89faa369eb9eb8a4196f73a8b39bd9c55b5702f405270af00ce1060861c26ac942d922898d06880bc7692154076285d855e57ece82da70ed1b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}