{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2a3439155ac1ca88cd2ac9db0b802444a29f22a213416167244e6427e0e2d0dc",
    "signature": "0xbf144546178c2ede9258fe1882ccce22bf427207dc533eb51e5cb96d7ab40d0d50e917a4add1c4549e11579fe124fe1366b7bd32df4c8ad8e2468352d5d2564d1b",
    "signer": "0x257c9f4A9563d6A4a2bF3be7Da1738e167fcF295",
    "userId": "301719964"
  }
}