{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2445887f0e51c1db9b800dd1af90eef9a32c34320998e70ab71a32cd674bdfd1",
    "signature": "0x87f54bfaace9768e8259fead899ee3c351f51c5c533f42a4f7403d4c9ef7cf296fd4616248b6e58dc53f67fb312e352b5557eeb1efe23ee29883ff4ef4949ebd1b",
    "signer": "0xc5Fa09f5371cEfEBf004B331D3017dAe145f31c4",
    "userId": "468813873"
  }
}