{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "997330870",
    "entityType": "User",
    "nonce": "0xa90f8109ea50b60ff8187877d395bd3d21ab62fe8771738971a29d5c7bd41813",
    "signature": "0xe90d247d620799b943b88258c24360569745598b73298b46e9ab0572e2c1ba432d96ceec43c63d89f630f748585eb5fcdc4c1377bfc563dcec06e35105b88ced1c",
    "signer": "0xAaC77705f5f6bd787D8581c36Ddaf7c0c7AE3370",
    "userId": "827420993"
  }
}