{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1fed17a859fe25f811a9d7c86d06fe1fa1a9a8c0e40d086e0d8023a163608b75",
    "signature": "0x8f75b00d1447771f7583545768c2b87e6cafef2907288e85108bd8e8b26fa5d60a345a8eb90c05ac5720d52725b62e62c8fd30b2440401e88b12a83c1a6af7951c",
    "signer": "0xf442b5999152f345D74Ad7529Af1563444B54572",
    "userId": "941192291"
  }
}