{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "321073612",
    "entityType": "User",
    "nonce": "0x6eb57c492b743c8b4604ac8fca49e757190ba22d708955ba7ea09e2a18abd1dd",
    "signature": "0xbdce4d7bdb6b4226898aa7c3ebb2716da5f4d7fe80d715bf7441bedc8aeb09c930ced028ea6b511916e67bcf907398be75b213c92f5ca811e1bd2cdfc44d6e641b",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}