{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x50e747a14d2eeac5bd97067044ede96b2da1ffc37bf6770b5a85c46241b701a1",
    "signature": "0xc9eadea151761fcc92f42add89f56343d98f057c53748a79dfcaab5bf6e96df62cb4cd8233974bba6aca986696a2ad983e745412b4de28f05cda2e479e5d41341c",
    "signer": "0x1b8DcAD5ED837233989D4f246852f5aAdf1f61eA",
    "userId": "400923052"
  }
}