{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "142937",
    "entityType": "User",
    "nonce": "0xd6d4b314a8384ea84581fc89f02da7eb9753561892b24ac96d71835c7748e203",
    "signature": "0x628238ce2aa8cf495fc08fb72db2b5965421cd309c55fe4d066c822c844959d5641fba59b9ab02d7b409e327259fc7b84ec27c886a15f257ec76e1cd93f00aef1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}