{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2083",
    "entityType": "User",
    "nonce": "0x4ad28e59944955cc535023bc2e94888d3ac8976bf6f65f983c574ee9cf1e4ace",
    "signature": "0x4bfd520c1d2db32c0f2b9866dded2995e983d0bfea3b5d1b5dfeedc68e0a65710952a2a002ada1b6e3d3908c3ec3e58e1f75b1c2140db37da6e591699fff51001b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}