{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "154589",
    "entityType": "User",
    "nonce": "0x369d43eeeecee89f8d32a5583ddb6d41c07b73d483750ee542cec1d7a83ef514",
    "signature": "0x97d2b921cfb726fc8239da04f33c9e146ed7fb6f588ce534563a108aceec5c521121b28ebd50f47afbe0f2b1952fbf927e399041a55dea1c8ce775818339293d1c",
    "signer": "0xfEf199273dc1B7112aA0D32cc0DbF797aC6EAfE5",
    "userId": "198179849"
  }
}