{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "7815",
    "entityType": "User",
    "nonce": "0xc7c314209ad3a4bacda057c599c8c739e57bffea011476640d5ed6ee15086662",
    "signature": "0x02d5aa4323774eea51e281f24f27ebb30d6791addb20f6b6991737c84613df1f220e46076bb3f64c3e117f4f014b8ce46f5985f245d9c9b54ca1adddad346d511c",
    "signer": "0xc0621be31c1D1B62b94F2d48eE34dD3c3dA9D57d",
    "userId": "161438318"
  }
}