{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "354908",
    "entityType": "User",
    "nonce": "0xe1eded2eb47a6cd5fb3d8a3467ac669082e50289099e122f72db7db15c8a1269",
    "signature": "0x12ba422fddf2d78161ac33309c487722fc38ec24e2e10e7aae67f5328fe1e2456d7154c078d56665745df98148811ef7161f3a1416d70203090e1b862d9726fe1b",
    "signer": "0x21370B7a703524cC2941323C2c960224021F8D56",
    "userId": "986168993"
  }
}