{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x809ec2ab98147bd9fafb6f1f905b590ce625618ff895dc9582ccd420991831cb",
    "signature": "0x656561678d799427ad6529f4983e61f9f63efea0d2791be460e50f11c0cfd5c35144d91d4e0e58563acfd05528d593df6d82100d17bc2b23832a894799e940391b",
    "signer": "0x2A7710D9Cb62B084Ae0295B99B9578C288E10ce7",
    "userId": "359451628"
  }
}