{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9ae1c24069ec693f7ae770725874949fb5eafa5beb3a0baa3254226e0eb03949",
    "signature": "0x406199b8ee771a570f42f5e1e5592da7b62cac0139e2ed9db3586616eb0a28e73aac46049537e1db0c8d0e70fc55bf5863cb2d2fc3d93385c53ffbd1675252bd1c",
    "signer": "0x2FC8ee16470A60117603F84C8f2b6694A7678b35",
    "userId": "575151774"
  }
}