{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "88399",
    "entityType": "User",
    "nonce": "0xbf1ae11f8bc26c1e4983ff35a34558ab548487dd5080fdaa73320f7320b42ae7",
    "signature": "0xf186ba3604ce1a3a580f0275edb16c94dd00589f506dd3bb8b86ebc90cadd9b35c8b710b606105f0d00cf8a1926c8306a0a88bc1a8b18fe7ea1702a2f54d05f91c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}