{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "328915105",
    "entityType": "User",
    "nonce": "0x608262ddca53487a4920488b950ea8bbc3d9b2740cedbb8253228e94f375453d",
    "signature": "0x1efcac3ec59d1667797c1afba8b104c8786325a5093469a653408e618b51115c3f46f80baf858cbb326fb56805a5457596f55a0bc3fb9140a9654fddff7e7e3e1b",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}