{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "607647194",
    "entityType": "User",
    "nonce": "0x639c749b4d34cb3ba9f103f25e32ca0e86dc3d545eb06a0f320a3ca979131983",
    "signature": "0xa42e5c14f4e6dc019f8690a2dfb03f68061555cec217081a481166795bd2f18973fc7ef6a343345622f28670e4a9d1280befce917c6b4abfb6179c9b39b4c9721b",
    "signer": "0x96818aB6687d2E9bA070EB1d6843ef7BfEF5cDa4",
    "userId": "806873848"
  }
}