{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "216311",
    "entityType": "User",
    "nonce": "0x04752f97d0c9b494063d3736159ab069cce6e347027b35c4530236cbaa22abfc",
    "signature": "0x67f742135fb0e9c994612ad669bc0677a8984bce699d79f519eb90ac8811d6e94e77eb643896dd3823d6ff0987761fbe0dac820d532c122ab01b806effb13d761c",
    "signer": "0xa603e9487Ed7C3C62E8acb85f8f32acFf5d6349b",
    "userId": "278135553"
  }
}