{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "124518",
    "entityType": "User",
    "nonce": "0x9aeea594a25ac2385bced3616096a96ba8fbcd900eb4e00ebf450b3e8fde3acd",
    "signature": "0x2c7cd6385b7b20fcd91da85600089801b95f937b480eac4ee67f3df72066cdfe0e511df9e144cde8761e970184ac2b855891bae0d0eb022442b38ba30c84898a1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}