{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "12273",
    "entityType": "User",
    "nonce": "0xf4d946af8fd636d7b007064a8f4e8321d9710bb3ca163bfafbdf10266e9d6c9d",
    "signature": "0xd158aa4c6f486fd5e4790cb87ab38ffb01c4db654e84260e91da88152024e862201d084ef4210ed4d3dd0259a93aceadd92b09f20fe9853d20662b724236dfd91c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}