{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2154",
    "entityType": "User",
    "nonce": "0x56d43dc18e251bc7c1b877e1a921a3eaaee4bc921e7d931fe5c711fa25081c5d",
    "signature": "0x566799224eba9db99da543b0c93aa29be2aa2fec5c7fb8d81c1ea164d29873ec2369d82ed52001e9f48a629de5a7e47616a1df47e6d7adf47d156b8900e2833c1c",
    "signer": "0x040629E31a68119093b9a0111257C8449c2f8e10",
    "userId": "103994"
  }
}