{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51702",
    "entityType": "User",
    "nonce": "0x40ca8a5842a5f0796fc34101a80411272501d8626b9a64c2cd183db6ad3ffed8",
    "signature": "0x32727b0cb1d64f3accba2e5c7232aec50964c33012edbf9bf66c70ed040c1d5d5eb154977d5572a1bae27ef0d1b477c08abcc0eb55190310d8c5922d6ccfb7e31b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}