{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51154",
    "entityType": "User",
    "nonce": "0x2a6e64372cecf332ab30ab8888a3f319f73d1b6a7a7ce79cd5f05d0c21397ab4",
    "signature": "0x37956bec145eafe81c9788382b5807516b3560f9ce2cba5a4064a43f67668d74203a7dff5b32a0281405a2047057da2a39d6ff603274f062fc80614609c47cb31c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}