{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "319458",
    "entityType": "User",
    "nonce": "0x98d7cc57e49c380107da104e5bea92a208e4630a21e61a1e44ea459a98b4d71d",
    "signature": "0xf40056f7d14a061ff14e3bd36544fc6409c696cba21472539a410172ecb44c637307d6f3fcc53f54509f3e6cf02cea59ae586042538c612905a81c2748dff50d1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}