{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x288759f8c482524925b7806ffacdefed4a903ba9fc1f89bc597b99bb23673337",
    "signature": "0x4c956e6b3733f3ff00d97ec426a2323af9d1964b3f5411ca5cd29ca20cf2da8824b8379b40fa56b2d73cfad91e1e7d5b5436920cc23d69e4de40bfc2fe3cde361c",
    "signer": "0x1043Da151F3d07e0E55c08dE7Cb2763524e2DaD0",
    "userId": "531755545"
  }
}