{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe48c2efc2d11ec6396aa5cee27b53c1bfc66addb53fa2e8800e52e73c8dd7794",
    "signature": "0xfd81f6e349162f4d58d0a07b906c60a8c627e6eb5388c0dd4b80d307fe4e4063750195e06f40ecbbbc0aebb79fc49bf0c430af7b404d913c2f7b30fc7fffac631b",
    "signer": "0x14C684BCa907a403330AcdB78cCc74c1F273dbDE",
    "userId": "806181021"
  }
}