{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x837144d70f68c6e1af020c9d6f4ca686c5e698abdbefbbc42486874a7fa1209e",
    "signature": "0xb7229a47423934399fd8a59b27e60eff9cc70d7dea6a6c1a84ba07fb3443baf71e9a903811db753936f567bc1662050f839bb6526644969b76c0b8d3dcfca4cd1b",
    "signer": "0xA127c51d3Da0e5aC363E0E9bA40263f91F10B2A5",
    "userId": "554909399"
  }
}