{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe7f50282d7d3bd2d382e3075b468b7cceb472f7dc957c82bc3e595ecb2f02174",
    "signature": "0xe5934995475468bd749d0f673eb8b9dd5459fb3f65b0b372440f32c7d7be45f31df2a15d94b373d43ef19b11aa479b444b3f4cc2bf08c6c9fa2aba39e68c80a21b",
    "signer": "0x5e59817B39161EC7259E1d3F3556E838e9d9D23B",
    "userId": "587014443"
  }
}