{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "210890",
    "entityType": "User",
    "nonce": "0xdec97ea55e00e273206d8079c9c94cd5b8067a9b621bc5877f1ed543b8f12bdf",
    "signature": "0xdd48259b5cd26ccb401d9dced917e7097ac709d919f74622de0121ed340ae6843e3c441cda0f1425cfd358d8ef4e2bd8924642b7a96b45573d26787c54b72ed81b",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}