{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "325172820",
    "entityType": "User",
    "nonce": "0x86c5a8180c2d062806dbc97f466da858c80c0ad9a3e67a832a2fe50ce95412de",
    "signature": "0x50a3b2e006927d8d73aba8801c1c26026b962906a8af3d998532a1f509a0fe2d0506c7adab6aa170c29bab7051e84f615de3c97a35db5ac6494dafaaa36275f91b",
    "signer": "0x7F52035F6FD8a71240adf35768244d51512553c8",
    "userId": "550902409"
  }
}