{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "800871513",
    "entityType": "User",
    "nonce": "0x3a3b6290a9bf5e8d4d8283516c32bdaa56ba1ac7ec7d6464c34dea1770338b36",
    "signature": "0x2998752e40a8373d714250563af7eef2d886f0f67d98add8d57c849d2a42d5b108dc70b86869597cf01a40e6e17fd54d0f77ff317382c0363c2666582880fce01c",
    "signer": "0xd489B786708CDd8661b152CFF27695dC12c8c0C9",
    "userId": "647391197"
  }
}