{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "887242445",
    "entityType": "User",
    "nonce": "0xe75d6e1d4130fcd5fc29e3598a4842fdbc2fff80be327b0ae4607922317a5748",
    "signature": "0x28313df724c7442d5d508fd85e15c2077c6fc556c6b9cd309c4cd53f1d3f4bb70609c0c132fa5275b3fc20e9811d1b476610df044bb9f12ff402ea5a94f385251c",
    "signer": "0x6AAB6EaEa3f7F15750b649C269b0391dcB19dEeb",
    "userId": "92019297"
  }
}