{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9abcef6eae7a4f376701ea5d3a5cb98073276d67370a654fb5a2e1f942c1722d",
    "signature": "0x969bb2ed356861a1f394055f5297219f0f18bd4d9406efa799d0f3b6b5ffe93f6342006fd3e220e16d417a4885ee9efc690d7a5344e9eb2d32bb02c249a151181b",
    "signer": "0xc63016B2C206b20f3E00cEb6814D65a5AB37604D",
    "userId": "691583106"
  }
}