{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6fadc5206e5f2fb28e13d11c88992f92add65b310add29a78ca5744ddd80bbea",
    "signature": "0xf1673a3ade04f6c0036e9176cbc2b1d3f5cf72e084e6a11da652d671024ace5f2346ef4df61fbdb03c93d12c72c611d22561bd78ad347c6535df262c123259551b",
    "signer": "0x8fFd8C007331145Bf6cca058a8A234C5aAf0E848",
    "userId": "412385415"
  }
}