{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0a51f62e488671e18c7a8ba27e42d863a650686fb5fb43822354925a412c1260",
    "signature": "0x8e52e4c00297a23e71f888e598eace42ecf884d5326824336a221fe474d932fb01880af7ff72a4691f9277bd17929d0013ce477b1707614d2a1826a601f6251c1b",
    "signer": "0x674FFC02F71bdD4bD3Ae60c618579EBDD541E397",
    "userId": "787787230"
  }
}