{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x732f00768b4625b8860e0723d8fbfd990e57e9acb3c7d808d04add9a11b3129d",
    "signature": "0x66412409e5d8d51a9101fbefe2f497a2500c665e5701ec25fd33b78787fae1bf61dfe029c468927150e6b5039e54e195324f2a85170b212ed207955028baacc11c",
    "signer": "0x159630f64804b735F085Fa8ef266e151477FFa5c",
    "userId": "783037591"
  }
}