{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "446645802",
    "entityType": "User",
    "nonce": "0x6f24021c5cd4773d8c500f249200d5e66b443686ad9577ac56eb797359474dca",
    "signature": "0x15ef814be7b3ed52a0ce14f2e18119260455324a7f3cfe37a4a829358710efd820d9d9bad16eaf8a8118a65e14d51f5adbf488f6d07ca3c977f086a3cc0974ed1c",
    "signer": "0x257c9f4A9563d6A4a2bF3be7Da1738e167fcF295",
    "userId": "301719964"
  }
}