{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xed2f3dc1a4ad7e97b8dad56a7c81eb8814495e38733dc676f5576c537045e605",
    "signature": "0x985dcf74d0eae640074cffd0c1f55b6b2594f449a9cbd562e1894a8d3658f5a133bc955ec3e5e016dc54ace73777c571c7b60dfbc807b1fc3b5898598eb859aa1c",
    "signer": "0xAd7D37EF905e6eD9FfDc7aF8e2114d4515D86e1F",
    "userId": "88714330"
  }
}