{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1807579",
    "entityType": "User",
    "nonce": "0x17fe7aa3f2090a4b080d804f8d8f230bc84913d2f6463f1fe13b6083bd7a7d48",
    "signature": "0x64b14d62357565ae5345a9c8b00b4ee41ca8891a54cfa8e184038156de97250150baac9a213261ac105c06fe0497c5004d750a2e8f13eedd9d9dffe3ca8198eb1c",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}