{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "319025881",
    "entityType": "User",
    "nonce": "0xda33f944c2ae351841d36a1980dca10604a90150e92a6a2abe4a81a13ea228c9",
    "signature": "0x3e4bb8a653881b0fa0121e22aefee95adc8a3bd94c004db0dc6e636df0b1cd1366f073bb83a516ca0ff16bdb6e086baa89da8673a233f5822262603e232808971c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}