{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x857bd4c7e0faab9030a20b0ed0534a2909462663bc42eb62e91806b0b3a86ea9",
    "signature": "0xbf4fba0942618a77d13b82bae97ac4290dea3d9dd18a9eb0c6218f8365d2b1b1380de98f987f28388fe15eb48461f3289fce12ecdbae00c6546f9389536fc45a1c",
    "signer": "0x0a5876E0Be2cFcE16464311C98B02EE9A29f4Fa0",
    "userId": "741034320"
  }
}