{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "4222",
    "entityType": "User",
    "nonce": "0x72c5a1f06c3d44853957cbc78e02db75982407a9058ef91e5cdd775e4d693cac",
    "signature": "0x09a6e3d3a25f70181a1bf6f9ad22c6bd64bdc42277a64c15b3be4e6a669c80ff12082b860ec8e337a091ac8b97629ff89acd4af767af00f4cc6a504c28a668b11b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}