{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "13451",
    "entityType": "User",
    "nonce": "0x5b500407f117a3af0e20cec51647582f908381f4d10bf8726d000dcf34f2598c",
    "signature": "0x39c85c75efdbfd030c937e07130f94dd0050bd3708989457b6e52eeb756c630272506ab4c59ffccd1fa875eb12967998f373d42f0d858967660b51d986a9998d1b",
    "signer": "0x7425EdbFdF528603A88c658f4cf8B1396a8a77F5",
    "userId": "406225571"
  }
}