{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4f0aa8ad222ede08ae11566d29fb34ab011407ab627243270da0fe188f483470",
    "signature": "0x585fc6c7be0821735b75c423d246e9612d96ea31029d3b4d634538397a536ec1709539fc3a06626e6f34dcf32f30b8392ddf38d6d8db13ba3fddeb38fc6dced41b",
    "signer": "0x7d58E725Ea32a7e88B0839c4249336fE9eEC3474",
    "userId": "190661937"
  }
}