{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x43cf25170aaf251e62996b9852c82be60894684d21733ec18d38acc2ae0968d5",
    "signature": "0xc762bd22892a94378a985f2449e48361f96a49e39e5a01b38f1d64e47c6906b63224b5c406982b56260e4224ee4d93bbb4e1fb18a3a3f398f5c34dabc9179b161b",
    "signer": "0xdd39b12399591885749F20839fcf8D02A9eafBD2",
    "userId": "594743360"
  }
}