{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "190942",
    "entityType": "User",
    "nonce": "0x8398f53f2e332737f5ddfa7aed1489a0dddf22de1cc76f6d93b799edc47905fc",
    "signature": "0xd3e11f2eac0550915c16441f9d296b3d292756bac33dd302e1e940d2ab90022956123792591d1f5e242e930295d9c730d5dc68db8a74781f0e76d00b491b6e091c",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}