{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x03ffe9766ef03296e731deedb7e2e87e8243bee7e92b9c5a1ba53193b9c41ad3",
    "signature": "0xc1905186caa108d354f46ee9b48b44838df48e49ae89d86d73a097925f720d3f575259f08b3248e376f60ca46eb86f95c89b7e1ece9675e1186676c0d6380f991c",
    "signer": "0xF9476a8EEEC6e83Df55aa21d164E1d42B64037B8",
    "userId": "65393953"
  }
}