{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "89",
    "entityType": "User",
    "nonce": "0x774c8c5d227c19909bedee22d5db2a6d1100b4b4950bea795ef19fc053e0ea4b",
    "signature": "0x76a6e5d3e2e9e2b82dd62d53bc87a8b8b46c8ee98a7f84b4307fa304125dbb4527997a9efa22d5474656d88800a313e44c8f0bb08209c4d09aa1b8f18b9400581c",
    "signer": "0x40E8E224E8F8a9f835e4dc8851Da72DCEd75986F",
    "userId": "504092010"
  }
}