{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "707937",
    "entityType": "User",
    "nonce": "0x3b463503e70f34dd62f87060068217076f8afbe005c196ce7ea7c9c9b60fa346",
    "signature": "0xf5b7bec2512652ed1e3d6ba2c97b300c007b542224e87f426d0e469ac56310e17176759c71446ea46ffc20bc00a576b5b9684c6239ec5230c8c6ca9d501d3d161c",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}