{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "8819",
    "entityType": "User",
    "nonce": "0x880e59bcebcfff54a1602499c9e02b62ed62b5fb2f329c5af88adc17fa2ba1b8",
    "signature": "0xe49081674af092e072d67cfe34254bc70fec9268626620c7b1ff99e0ee2a9bfe737cf86b8dae3db9a1db0035eb0bba49483340251997cc429aa3f3e17ca3ee691c",
    "signer": "0x243f92B83d056f818b9b95664A8B7A86805A3E71",
    "userId": "111448"
  }
}