{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0x8e6b8b8ba8329be775eb1dedb12ae8140b045baa913aca902f601f26e50c8791",
    "signature": "0xf06168b93bae82b0fbcda8ee9999924a17bb54620eef97a7a8d7556069aacc03168f9bce190d1afbee050573e951aa24414b7fb44866cbec4e654cd8e7f3a2c51b",
    "signer": "0x51eb83B482b61e1b0E5443cD8475874Ba64aef1F",
    "userId": "857012202"
  }
}