{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x23ecb5f76813e58f397940ba1b34977642993bd3a4d2b529a653ed08446c6401",
    "signature": "0x5055cedd24b5d47528670e1fefaf9263120f0a5fd3764196d06b332fac7948680f03d480d8317f3dca170e13271bd6b96101bb903cba2b6a5aa6313b02ee05ae1b",
    "signer": "0x5Bf16e390e9979d998f5DCdF509Abc7E786E74bd",
    "userId": "374027008"
  }
}