{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xfb2f89555beddd66a37bfba4aafb13a9bb907eb8b8aaeaf03820dfebbf4a44bd",
    "signature": "0x918db709282d564a5b04f9f408e01329666638c63df8137051f3fbcb33d64e2a7c9aa68f5ac831d3aeb1951e86b74e1c06ffdc0dccfac1998226a78859562c2f1c",
    "signer": "0xef57570Ae6d84a59Ce8Dad25DC295F693b9C81B6",
    "userId": "213952165"
  }
}