{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "398",
    "entityType": "User",
    "nonce": "0x6a786f6c882a8d0d2ea35bf1134ee155d4164235017c25584a37bf9d946889e1",
    "signature": "0xe8d33627328d80d5060fb50c447d94eb0468f1b8f1e3a78d342a660372887d6b077f8512792681330c9c0128eedd7fac625f7f478c0e233aed4919d805f61e121b",
    "signer": "0x243f92B83d056f818b9b95664A8B7A86805A3E71",
    "userId": "111448"
  }
}