{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x51c5d799f169e7c567671e76035a9fb4596dfadef72154aadea66d174d67589a",
    "signature": "0xef7862b12e14025f4e1714d1a79c0ed24270c291d06adffc4cf138c3360dd4f37afccb1542997526cbc2665b144bd9ba63f7085360674b81f6d833a8f4aabd521b",
    "signer": "0x7C281F670023af5435BC40477f844ae13ba5E04f",
    "userId": "841661140"
  }
}