{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd3dae2eb47e352161ab62154dae59b815ba0a56674adc2478755e5b18bac0c64",
    "signature": "0xc949dd850deec5548d3281c8b38eb9d33f767f6fc23bfe4274484cc19727aa40694ee6e597c180c1089b4830e87dccaeb300aa0b81cb09011ea71c3c33a745d21c",
    "signer": "0x19166AE09d463E514b0aB409C88EEC06449e0Fe2",
    "userId": "556008552"
  }
}