{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf9fe8b0f23ba525a985d54b41422357a5d76b9cf4277be84b5030c0a9c5e2de2",
    "signature": "0xc542bfe4f62049f8259fa8689ea7996a198a2339502534569e6982756a088af46e7267ce6f773ddb34abce2afc3df88ff300c3d74abacaf61e0845a82e8231221c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}