{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "28155",
    "entityType": "User",
    "nonce": "0x45310470d73993d9118e5c7c1678c0cac8cf441cafcd434115515baefaafa6a4",
    "signature": "0x2f49f557f4f2c2f09378fe860b6cf52d4c32a74b60e5d0afd6fdb45a0026f04d78ec9e2a9046ba986001f6efd43c6142e88c0c61eb268a59285d8ebfcc36a3b01c",
    "signer": "0xfa1f98f0530E55C2BEFA45f0F1B3A699b4559136",
    "userId": "149566028"
  }
}